Finding the Third Proportional to 20,310.75 and 31,390.03

Step by Step Solution

1. Step 1: Write the proportion equation
   20,310.75 : 31,390.03 = 31,390.03 : x
2. Step 2: Convert to fraction form
   20,310.75/31,390.03 = 31,390.03/x
3. Step 3: Cross multiply
   20,310.75x = 31,390.03 × 31,390.03
4. Step 4: Simplify right side
   20,310.75x = 985,334,061.88
5. Step 5: Solve for x
   x = 985,334,061.88/20,310.75
6. Step 6: Final answer
   x = 48,512.93