Finding the Third Proportional to 20,339.86 and 31,491.28

Step by Step Solution

1. Step 1: Write the proportion equation
   20,339.86 : 31,491.28 = 31,491.28 : x
2. Step 2: Convert to fraction form
   20,339.86/31,491.28 = 31,491.28/x
3. Step 3: Cross multiply
   20,339.86x = 31,491.28 × 31,491.28
4. Step 4: Simplify right side
   20,339.86x = 991,700,794.77
5. Step 5: Solve for x
   x = 991,700,794.77/20,339.86
6. Step 6: Final answer
   x = 48,756.52