Finding the Third Proportional to 20,730 and 25,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,730 : 25,243.50 = 25,243.50 : x
2. Step 2: Convert to fraction form
   20,730/25,243.50 = 25,243.50/x
3. Step 3: Cross multiply
   20,730x = 25,243.50 × 25,243.50
4. Step 4: Simplify right side
   20,730x = 637,234,292.25
5. Step 5: Solve for x
   x = 637,234,292.25/20,730
6. Step 6: Final answer
   x = 30,739.72