Finding the Third Proportional to 3,918,585 and 8,491,092

Step by Step Solution

1. Step 1: Write the proportion equation
   3,918,585 : 8,491,092 = 8,491,092 : x
2. Step 2: Convert to fraction form
   3,918,585/8,491,092 = 8,491,092/x
3. Step 3: Cross multiply
   3,918,585x = 8,491,092 × 8,491,092
4. Step 4: Simplify right side
   3,918,585x = 72,098,643,352,464
5. Step 5: Solve for x
   x = 72,098,643,352,464/3,918,585
6. Step 6: Final answer
   x = 18,399,152.59