Finding the Third Proportional to 15,532 and 21,872

Step by Step Solution

1. Step 1: Write the proportion equation
   15,532 : 21,872 = 21,872 : x
2. Step 2: Convert to fraction form
   15,532/21,872 = 21,872/x
3. Step 3: Cross multiply
   15,532x = 21,872 × 21,872
4. Step 4: Simplify right side
   15,532x = 478,384,384
5. Step 5: Solve for x
   x = 478,384,384/15,532
6. Step 6: Final answer
   x = 30,799.92