Finding the Third Proportional to 12,521 and 25,387

Step by Step Solution

1. Step 1: Write the proportion equation
   12,521 : 25,387 = 25,387 : x
2. Step 2: Convert to fraction form
   12,521/25,387 = 25,387/x
3. Step 3: Cross multiply
   12,521x = 25,387 × 25,387
4. Step 4: Simplify right side
   12,521x = 644,499,769
5. Step 5: Solve for x
   x = 644,499,769/12,521
6. Step 6: Final answer
   x = 51,473.51