Finding the Third Proportional to 10,872 and 25,428

Step by Step Solution

1. Step 1: Write the proportion equation
   10,872 : 25,428 = 25,428 : x
2. Step 2: Convert to fraction form
   10,872/25,428 = 25,428/x
3. Step 3: Cross multiply
   10,872x = 25,428 × 25,428
4. Step 4: Simplify right side
   10,872x = 646,583,184
5. Step 5: Solve for x
   x = 646,583,184/10,872
6. Step 6: Final answer
   x = 59,472.33