Finding the Third Proportional to 20,749.13 and 31,144.31

Step by Step Solution

1. Step 1: Write the proportion equation
   20,749.13 : 31,144.31 = 31,144.31 : x
2. Step 2: Convert to fraction form
   20,749.13/31,144.31 = 31,144.31/x
3. Step 3: Cross multiply
   20,749.13x = 31,144.31 × 31,144.31
4. Step 4: Simplify right side
   20,749.13x = 969,968,201.10
5. Step 5: Solve for x
   x = 969,968,201.10/20,749.13
6. Step 6: Final answer
   x = 46,747.43