Nope. You correctly converted meters to kilometers, but neglected to multiply the width (60,000 km) by the length (60,000 km) to get the correct surface area (3.6 billion square kilometers).

You also incorrectly converted square miles to square kilometers. There are approximately 1.609 kilometers in a mile, but 1.609²=…

Is reading comprehension that bad these days?

...60 million meters BY 60 million meters...not 60 million meters squared. It’s actually 3.6 quadrillion meters or 3.6 billion square kilometers.