Finding the Third Proportional to 12,171,861 and 25,701,849

Step by Step Solution

1. Step 1: Write the proportion equation
   12,171,861 : 25,701,849 = 25,701,849 : x
2. Step 2: Convert to fraction form
   12,171,861/25,701,849 = 25,701,849/x
3. Step 3: Cross multiply
   12,171,861x = 25,701,849 × 25,701,849
4. Step 4: Simplify right side
   12,171,861x = 660,585,042,018,801
5. Step 5: Solve for x
   x = 660,585,042,018,801/12,171,861
6. Step 6: Final answer
   x = 54,271,490.78