Finding the Third Proportional to 518,116.50 and 799,315

Step by Step Solution

1. Step 1: Write the proportion equation
   518,116.50 : 799,315 = 799,315 : x
2. Step 2: Convert to fraction form
   518,116.50/799,315 = 799,315/x
3. Step 3: Cross multiply
   518,116.50x = 799,315 × 799,315
4. Step 4: Simplify right side
   518,116.50x = 638,904,469,225
5. Step 5: Solve for x
   x = 638,904,469,225/518,116.50
6. Step 6: Final answer
   x = 1,233,128.98