Finding the Third Proportional to 20,486.25 and 31,324.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,486.25 : 31,324.50 = 31,324.50 : x
2. Step 2: Convert to fraction form
   20,486.25/31,324.50 = 31,324.50/x
3. Step 3: Cross multiply
   20,486.25x = 31,324.50 × 31,324.50
4. Step 4: Simplify right side
   20,486.25x = 981,224,300.25
5. Step 5: Solve for x
   x = 981,224,300.25/20,486.25
6. Step 6: Final answer
   x = 47,896.73