1. The problem is to calculate $50\sqrt{900500}$ using long division format. 2. First, understand that $\sqrt{900500}$ means the square root of 900,500. 3. We can approximate $\sqrt{900500}$ by finding the square root of a nearby perfect square. 4. Note that $900000 = 900^2$, so $\sqrt{900000} = 900$. 5. Since 900,500 is slightly larger than 900,000, $\sqrt{900500}$ will be slightly larger than 900. 6. To find $50\sqrt{900500}$, multiply 50 by the approximate square root. 7. Approximate $\sqrt{900500} \approx 900.277$ (using a calculator or long division method). 8. Then, $50 \times 900.277 = 45013.85$ approximately. 9. Therefore, $50\sqrt{900500} \approx 45013.85$.