Which of the following often used words is wrong — "Japan's the world's third biggest economic power"?

Clearly it is the use of the word "power." In the last week, there has been a major change at the International Monetary Fund with the enforced resignation of its managing director Dominique Strauss-Kahn and the scramble to find a successor

I have been looking in vain for a statement from Tokyo on how it regards the world's top financial job and who should fill it, or whether it is even aware of the problem. Japan is still the No. 2 shareholder in the IMF with 6.25 percent of the vote after the United States with 16.80 percent.