Finding the Third Proportional to 15,517.50 and 20,522.25

Step by Step Solution

1. Step 1: Write the proportion equation
   15,517.50 : 20,522.25 = 20,522.25 : x
2. Step 2: Convert to fraction form
   15,517.50/20,522.25 = 20,522.25/x
3. Step 3: Cross multiply
   15,517.50x = 20,522.25 × 20,522.25
4. Step 4: Simplify right side
   15,517.50x = 421,162,745.06
5. Step 5: Solve for x
   x = 421,162,745.06/15,517.50
6. Step 6: Final answer
   x = 27,141.15