Finding the Third Proportional to 12,538,664 and 25,608,728

Step by Step Solution

1. Step 1: Write the proportion equation
   12,538,664 : 25,608,728 = 25,608,728 : x
2. Step 2: Convert to fraction form
   12,538,664/25,608,728 = 25,608,728/x
3. Step 3: Cross multiply
   12,538,664x = 25,608,728 × 25,608,728
4. Step 4: Simplify right side
   12,538,664x = 655,806,949,777,984
5. Step 5: Solve for x
   x = 655,806,949,777,984/12,538,664
6. Step 6: Final answer
   x = 52,302,777.22