Finding the Third Proportional to 20,031.75 and 31,140.56

Step by Step Solution

1. Step 1: Write the proportion equation
   20,031.75 : 31,140.56 = 31,140.56 : x
2. Step 2: Convert to fraction form
   20,031.75/31,140.56 = 31,140.56/x
3. Step 3: Cross multiply
   20,031.75x = 31,140.56 × 31,140.56
4. Step 4: Simplify right side
   20,031.75x = 969,734,632.82
5. Step 5: Solve for x
   x = 969,734,632.82/20,031.75
6. Step 6: Final answer
   x = 48,409.88