Finding the Third Proportional to 3,930,218 and 8,491,522

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930,218 : 8,491,522 = 8,491,522 : x
2. Step 2: Convert to fraction form
   3,930,218/8,491,522 = 8,491,522/x
3. Step 3: Cross multiply
   3,930,218x = 8,491,522 × 8,491,522
4. Step 4: Simplify right side
   3,930,218x = 72,105,945,876,484
5. Step 5: Solve for x
   x = 72,105,945,876,484/3,930,218
6. Step 6: Final answer
   x = 18,346,551.23