Finding the Third Proportional to 3,955,496 and 8,470,864

Step by Step Solution

1. Step 1: Write the proportion equation
   3,955,496 : 8,470,864 = 8,470,864 : x
2. Step 2: Convert to fraction form
   3,955,496/8,470,864 = 8,470,864/x
3. Step 3: Cross multiply
   3,955,496x = 8,470,864 × 8,470,864
4. Step 4: Simplify right side
   3,955,496x = 71,755,536,906,496
5. Step 5: Solve for x
   x = 71,755,536,906,496/3,955,496
6. Step 6: Final answer
   x = 18,140,717.85