Finding the Third Proportional to 8,491,140 and 17,940,680

Step by Step Solution

1. Step 1: Write the proportion equation
   8,491,140 : 17,940,680 = 17,940,680 : x
2. Step 2: Convert to fraction form
   8,491,140/17,940,680 = 17,940,680/x
3. Step 3: Cross multiply
   8,491,140x = 17,940,680 × 17,940,680
4. Step 4: Simplify right side
   8,491,140x = 321,867,998,862,400
5. Step 5: Solve for x
   x = 321,867,998,862,400/8,491,140
6. Step 6: Final answer
   x = 37,906,335.18