Finding the Third Proportional to 8,619,596 and 12,854,655

Step by Step Solution

1. Step 1: Write the proportion equation
   8,619,596 : 12,854,655 = 12,854,655 : x
2. Step 2: Convert to fraction form
   8,619,596/12,854,655 = 12,854,655/x
3. Step 3: Cross multiply
   8,619,596x = 12,854,655 × 12,854,655
4. Step 4: Simplify right side
   8,619,596x = 165,242,155,169,025
5. Step 5: Solve for x
   x = 165,242,155,169,025/8,619,596
6. Step 6: Final answer
   x = 19,170,522.05