To find the percentage of the world's total production of corn contributed by Japan, we can use the following formula:
Percentage = (Japan's production / World's total production) * 100
Given that Japan produced 1.252 million pounds of corn and the world's total production was 123 million pounds, we can substitute these values into the formula:
Percentage = (1.252 / 123) * 100 ≈ 1.0171 * 100 ≈ 101.7
Rounding to the nearest tenth of a percent, we can say that Japan contributed approximately 101.7% of the world's total production of corn in 2006.