Here's how we get that:

1. Move the decimal point: Start with 520,000. Move the decimal point to the left until you have a number between 1 and 10. In this case, you'll move it five places to get 5.2.

2. Count the moves: You moved the decimal point five places to the left. This means the exponent of 10 will be 5.

3. Combine the parts: The final answer is 5.2 x 10⁵.