Finding the Third Proportional to 3,891,854 and 8,516,746

Step by Step Solution

1. Step 1: Write the proportion equation
   3,891,854 : 8,516,746 = 8,516,746 : x
2. Step 2: Convert to fraction form
   3,891,854/8,516,746 = 8,516,746/x
3. Step 3: Cross multiply
   3,891,854x = 8,516,746 × 8,516,746
4. Step 4: Simplify right side
   3,891,854x = 72,534,962,428,516
5. Step 5: Solve for x
   x = 72,534,962,428,516/3,891,854
6. Step 6: Final answer
   x = 18,637,637.08