Finding the Third Proportional to 11,638,499 and 25,291,531

Step by Step Solution

1. Step 1: Write the proportion equation
   11,638,499 : 25,291,531 = 25,291,531 : x
2. Step 2: Convert to fraction form
   11,638,499/25,291,531 = 25,291,531/x
3. Step 3: Cross multiply
   11,638,499x = 25,291,531 × 25,291,531
4. Step 4: Simplify right side
   11,638,499x = 639,661,540,323,961
5. Step 5: Solve for x
   x = 639,661,540,323,961/11,638,499
6. Step 6: Final answer
   x = 54,960,827.88