Finding the Third Proportional to 12,708.50 and 19,440.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,708.50 : 19,440.75 = 19,440.75 : x
2. Step 2: Convert to fraction form
   12,708.50/19,440.75 = 19,440.75/x
3. Step 3: Cross multiply
   12,708.50x = 19,440.75 × 19,440.75
4. Step 4: Simplify right side
   12,708.50x = 377,942,760.56
5. Step 5: Solve for x
   x = 377,942,760.56/12,708.50
6. Step 6: Final answer
   x = 29,739.37