Finding the Third Proportional to 8,137,802 and 12,589,353

Step by Step Solution

1. Step 1: Write the proportion equation
   8,137,802 : 12,589,353 = 12,589,353 : x
2. Step 2: Convert to fraction form
   8,137,802/12,589,353 = 12,589,353/x
3. Step 3: Cross multiply
   8,137,802x = 12,589,353 × 12,589,353
4. Step 4: Simplify right side
   8,137,802x = 158,491,808,958,609
5. Step 5: Solve for x
   x = 158,491,808,958,609/8,137,802
6. Step 6: Final answer
   x = 19,475,997.20