Finding the Third Proportional to 8,391,572 and 12,958,055

Step by Step Solution

1. Step 1: Write the proportion equation
   8,391,572 : 12,958,055 = 12,958,055 : x
2. Step 2: Convert to fraction form
   8,391,572/12,958,055 = 12,958,055/x
3. Step 3: Cross multiply
   8,391,572x = 12,958,055 × 12,958,055
4. Step 4: Simplify right side
   8,391,572x = 167,911,189,383,025
5. Step 5: Solve for x
   x = 167,911,189,383,025/8,391,572
6. Step 6: Final answer
   x = 20,009,503.51