Finding the Third Proportional to 15,457.50 and 17,644.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,457.50 : 17,644.50 = 17,644.50 : x
2. Step 2: Convert to fraction form
   15,457.50/17,644.50 = 17,644.50/x
3. Step 3: Cross multiply
   15,457.50x = 17,644.50 × 17,644.50
4. Step 4: Simplify right side
   15,457.50x = 311,328,380.25
5. Step 5: Solve for x
   x = 311,328,380.25/15,457.50
6. Step 6: Final answer
   x = 20,140.93