Finding the Third Proportional to 10,239.75 and 12,703.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,239.75 : 12,703.50 = 12,703.50 : x
2. Step 2: Convert to fraction form
   10,239.75/12,703.50 = 12,703.50/x
3. Step 3: Cross multiply
   10,239.75x = 12,703.50 × 12,703.50
4. Step 4: Simplify right side
   10,239.75x = 161,378,912.25
5. Step 5: Solve for x
   x = 161,378,912.25/10,239.75
6. Step 6: Final answer
   x = 15,760.04