Finding the Third Proportional to 16,872 and 25,215

Step by Step Solution

1. Step 1: Write the proportion equation
   16,872 : 25,215 = 25,215 : x
2. Step 2: Convert to fraction form
   16,872/25,215 = 25,215/x
3. Step 3: Cross multiply
   16,872x = 25,215 × 25,215
4. Step 4: Simplify right side
   16,872x = 635,796,225
5. Step 5: Solve for x
   x = 635,796,225/16,872
6. Step 6: Final answer
   x = 37,683.51