To calculate the population density, you can use the formula:
\[ \text{Population Density} = \frac{\text{Population}}{\text{Area}} \]
Given:
- Population = 748,814,048 people
- Area = 3,930,000 square miles
Now, plug in the values:
\[ \text{Population Density} = \frac{748,814,048}{3,930,000} \approx 190.50 \text{ people per square mile} \]
Rounding to two decimal places, the population density is approximately 190.54 people per square mile.
Thus, the correct response is:
190.54 people per square mile