Finding the Third Proportional to 8,619,610 and 12,854,670

Step by Step Solution

1. Step 1: Write the proportion equation
   8,619,610 : 12,854,670 = 12,854,670 : x
2. Step 2: Convert to fraction form
   8,619,610/12,854,670 = 12,854,670/x
3. Step 3: Cross multiply
   8,619,610x = 12,854,670 × 12,854,670
4. Step 4: Simplify right side
   8,619,610x = 165,242,540,808,900
5. Step 5: Solve for x
   x = 165,242,540,808,900/8,619,610
6. Step 6: Final answer
   x = 19,170,535.65