Finding the Third Proportional to 518,114.50 and 799,312

Step by Step Solution

1. Step 1: Write the proportion equation
   518,114.50 : 799,312 = 799,312 : x
2. Step 2: Convert to fraction form
   518,114.50/799,312 = 799,312/x
3. Step 3: Cross multiply
   518,114.50x = 799,312 × 799,312
4. Step 4: Simplify right side
   518,114.50x = 638,899,673,344
5. Step 5: Solve for x
   x = 638,899,673,344/518,114.50
6. Step 6: Final answer
   x = 1,233,124.48