Finding the Third Proportional to 313,784,607.50 and 684,068,116

Step by Step Solution

1. Step 1: Write the proportion equation
   313,784,607.50 : 684,068,116 = 684,068,116 : x
2. Step 2: Convert to fraction form
   313,784,607.50/684,068,116 = 684,068,116/x
3. Step 3: Cross multiply
   313,784,607.50x = 684,068,116 × 684,068,116
4. Step 4: Simplify right side
   313,784,607.50x = 467,949,187,327,789,440
5. Step 5: Solve for x
   x = 467,949,187,327,789,440/313,784,607.50
6. Step 6: Final answer
   x = 1,491,307,018.07