Finding the Third Proportional to 8,139,708 and 12,597,876

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,708 : 12,597,876 = 12,597,876 : x
2. Step 2: Convert to fraction form
   8,139,708/12,597,876 = 12,597,876/x
3. Step 3: Cross multiply
   8,139,708x = 12,597,876 × 12,597,876
4. Step 4: Simplify right side
   8,139,708x = 158,706,479,711,376
5. Step 5: Solve for x
   x = 158,706,479,711,376/8,139,708
6. Step 6: Final answer
   x = 19,497,809.96