Acer has announced the completion of its acquisition of Gateway, making it officially the third largest PC vendor in the world.

In August, the Taiwanese company revealed a plan to buy US PC vendor Gateway for around US$710 million through a tender offer for the company's shares. Since then, Acer has purchased enough shares to close the deal and has won approval from several major government agencies, including the U.S. Committee on Foreign Investments in the United States (CFIUS), a spokesperson for the company said Wednesday.

Gateway's stock ceased trading on the New York Stock Exchange as of its close on Tuesday, Acer said.

The Acer-Gateway deal, and a pending arrangement for Gateway to buy European PC vendor Packard Bell, will put the Taiwanese company in a position to challenge HP and Dell for US market share, while blocking rival Lenovo from gaining ground in Europe through its planned purchase of Packard Bell, analysts say.

Gateway will continue to operate under its own name as a subsidiary of Acer, and the company expects to expand its product offerings.