Finding the Third Proportional to 20,730.50 and 31,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,730.50 : 31,879.50 = 31,879.50 : x
2. Step 2: Convert to fraction form
   20,730.50/31,879.50 = 31,879.50/x
3. Step 3: Cross multiply
   20,730.50x = 31,879.50 × 31,879.50
4. Step 4: Simplify right side
   20,730.50x = 1,016,302,520.25
5. Step 5: Solve for x
   x = 1,016,302,520.25/20,730.50
6. Step 6: Final answer
   x = 49,024.51