Finding the Third Proportional to 202,849.50 and 315,330

Step by Step Solution

1. Step 1: Write the proportion equation
   202,849.50 : 315,330 = 315,330 : x
2. Step 2: Convert to fraction form
   202,849.50/315,330 = 315,330/x
3. Step 3: Cross multiply
   202,849.50x = 315,330 × 315,330
4. Step 4: Simplify right side
   202,849.50x = 99,433,008,900
5. Step 5: Solve for x
   x = 99,433,008,900/202,849.50
6. Step 6: Final answer
   x = 490,181.19