Finding the Third Proportional to 12,139,689 and 25,401,795

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139,689 : 25,401,795 = 25,401,795 : x
2. Step 2: Convert to fraction form
   12,139,689/25,401,795 = 25,401,795/x
3. Step 3: Cross multiply
   12,139,689x = 25,401,795 × 25,401,795
4. Step 4: Simplify right side
   12,139,689x = 645,251,189,222,025
5. Step 5: Solve for x
   x = 645,251,189,222,025/12,139,689
6. Step 6: Final answer
   x = 53,152,200.95