Finding the Third Proportional to 12,560,866 and 19,922,355

Step by Step Solution

1. Step 1: Write the proportion equation
   12,560,866 : 19,922,355 = 19,922,355 : x
2. Step 2: Convert to fraction form
   12,560,866/19,922,355 = 19,922,355/x
3. Step 3: Cross multiply
   12,560,866x = 19,922,355 × 19,922,355
4. Step 4: Simplify right side
   12,560,866x = 396,900,228,746,025
5. Step 5: Solve for x
   x = 396,900,228,746,025/12,560,866
6. Step 6: Final answer
   x = 31,598,158.02