Finding the Third Proportional to 451,870,726.50 and 698,255,498.25

Step by Step Solution

1. Step 1: Write the proportion equation
   451,870,726.50 : 698,255,498.25 = 698,255,498.25 : x
2. Step 2: Convert to fraction form
   451,870,726.50/698,255,498.25 = 698,255,498.25/x
3. Step 3: Cross multiply
   451,870,726.50x = 698,255,498.25 × 698,255,498.25
4. Step 4: Simplify right side
   451,870,726.50x = 487,560,740,836,355,776
5. Step 5: Solve for x
   x = 487,560,740,836,355,776/451,870,726.50
6. Step 6: Final answer
   x = 1,078,982,798.05