Finding the Third Proportional to 8,647,605 and 12,711,160

Step by Step Solution

1. Step 1: Write the proportion equation
   8,647,605 : 12,711,160 = 12,711,160 : x
2. Step 2: Convert to fraction form
   8,647,605/12,711,160 = 12,711,160/x
3. Step 3: Cross multiply
   8,647,605x = 12,711,160 × 12,711,160
4. Step 4: Simplify right side
   8,647,605x = 161,573,588,545,600
5. Step 5: Solve for x
   x = 161,573,588,545,600/8,647,605
6. Step 6: Final answer
   x = 18,684,200.83