Finding the Third Proportional to 12,189,448 and 25,387,809

Step by Step Solution

1. Step 1: Write the proportion equation
   12,189,448 : 25,387,809 = 25,387,809 : x
2. Step 2: Convert to fraction form
   12,189,448/25,387,809 = 25,387,809/x
3. Step 3: Cross multiply
   12,189,448x = 25,387,809 × 25,387,809
4. Step 4: Simplify right side
   12,189,448x = 644,540,845,820,481
5. Step 5: Solve for x
   x = 644,540,845,820,481/12,189,448
6. Step 6: Final answer
   x = 52,876,951.10