More than 90% of Bcom3's shareholders took part in the vote, with 95% of those voting in favour of the merger.
Japanese advertising group Dentsu will take a 15% stake in the new company, to be headed by Maurice Levy, who will continue as chairman and CEO of Publicis Groupe, and Roger Haupt, former chairman and CEO of Bcom3, who takes the title of president and chief operating officer of the new group.
Publicis will now have a global income of $4.77bn (拢3.1bn), and boasts agencies such as Publicis, Saatchi & Saatchi, Leo Burnett, D'Arcy and Fallon, as well as the Zenith Optimedia and Starcom MediaVest media agencies.
Haupt said of the merger: "The new organisation will have the necessary scale and resources to more effectively compete in today's global marketplace.
"On its own, Bcom3 held a strong position in the Americas and Asia Pacific, while Publicis Groupe has an enviable presence in Europe. Importantly, Dentsu's participation in this new venture, by virtue of its dominance in Japan and Asia, will enable us to offer clients a unique multicultural view of the world that no other holding company can match."
The shareholder meeting took place on September 20 in Chicago, with closing procedures set to be finalised no later than September 25.
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