Finding the Third Proportional to 16,179.75 and 21,571.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,179.75 : 21,571.31 = 21,571.31 : x
2. Step 2: Convert to fraction form
   16,179.75/21,571.31 = 21,571.31/x
3. Step 3: Cross multiply
   16,179.75x = 21,571.31 × 21,571.31
4. Step 4: Simplify right side
   16,179.75x = 465,321,522.97
5. Step 5: Solve for x
   x = 465,321,522.97/16,179.75
6. Step 6: Final answer
   x = 28,759.50