Finding the Third Proportional to 8,272,350 and 12,417,280

Step by Step Solution

1. Step 1: Write the proportion equation
   8,272,350 : 12,417,280 = 12,417,280 : x
2. Step 2: Convert to fraction form
   8,272,350/12,417,280 = 12,417,280/x
3. Step 3: Cross multiply
   8,272,350x = 12,417,280 × 12,417,280
4. Step 4: Simplify right side
   8,272,350x = 154,188,842,598,400
5. Step 5: Solve for x
   x = 154,188,842,598,400/8,272,350
6. Step 6: Final answer
   x = 18,639,061.77