Finding the Third Proportional to 12,171,640 and 25,701,380

Step by Step Solution

1. Step 1: Write the proportion equation
   12,171,640 : 25,701,380 = 25,701,380 : x
2. Step 2: Convert to fraction form
   12,171,640/25,701,380 = 25,701,380/x
3. Step 3: Cross multiply
   12,171,640x = 25,701,380 × 25,701,380
4. Step 4: Simplify right side
   12,171,640x = 660,560,933,904,400
5. Step 5: Solve for x
   x = 660,560,933,904,400/12,171,640
6. Step 6: Final answer
   x = 54,270,495.50