Answer
Honshu has a greater area by 4228 square miles.
Work Step by Step
$1~mi^2 \approx 2.6~km^2$
Victoria Island has an area of $217,300~km^2$. We can convert this area to units of square miles.
$217,300~km^2 = \frac{217,300~km^2}{1}\times \frac{1~mi^2}{2.6~km^2} = 83,577~mi^2$
Victoria Island has an area of $83,577~mi^2$
Honshu has an area of $87,805~mi^2$
We can find the difference in land area.
$87,805~mi^2-83,577~mi^2 = 4228~mi^2$
Honshu has a greater area by 4228 square miles.
