Finding the Third Proportional to 12,385,538 and 25,900,387

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385,538 : 25,900,387 = 25,900,387 : x
2. Step 2: Convert to fraction form
   12,385,538/25,900,387 = 25,900,387/x
3. Step 3: Cross multiply
   12,385,538x = 25,900,387 × 25,900,387
4. Step 4: Simplify right side
   12,385,538x = 670,830,046,749,769
5. Step 5: Solve for x
   x = 670,830,046,749,769/12,385,538
6. Step 6: Final answer
   x = 54,162,366.36