Finding the Third Proportional to 517,680 and 799,616

Step by Step Solution

1. Step 1: Write the proportion equation
   517,680 : 799,616 = 799,616 : x
2. Step 2: Convert to fraction form
   517,680/799,616 = 799,616/x
3. Step 3: Cross multiply
   517,680x = 799,616 × 799,616
4. Step 4: Simplify right side
   517,680x = 639,385,747,456
5. Step 5: Solve for x
   x = 639,385,747,456/517,680
6. Step 6: Final answer
   x = 1,235,098.41