Finding the Third Proportional to 8,564,486 and 12,610,155

Step by Step Solution

1. Step 1: Write the proportion equation
   8,564,486 : 12,610,155 = 12,610,155 : x
2. Step 2: Convert to fraction form
   8,564,486/12,610,155 = 12,610,155/x
3. Step 3: Cross multiply
   8,564,486x = 12,610,155 × 12,610,155
4. Step 4: Simplify right side
   8,564,486x = 159,016,009,124,025
5. Step 5: Solve for x
   x = 159,016,009,124,025/8,564,486
6. Step 6: Final answer
   x = 18,566,906.31