Finding the Third Proportional to 20,710.69 and 31,939.31

Step by Step Solution

1. Step 1: Write the proportion equation
   20,710.69 : 31,939.31 = 31,939.31 : x
2. Step 2: Convert to fraction form
   20,710.69/31,939.31 = 31,939.31/x
3. Step 3: Cross multiply
   20,710.69x = 31,939.31 × 31,939.31
4. Step 4: Simplify right side
   20,710.69x = 1,020,119,682.97
5. Step 5: Solve for x
   x = 1,020,119,682.97/20,710.69
6. Step 6: Final answer
   x = 49,255.71