Finding the Third Proportional to 31,321.88 and 65,235.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,321.88 : 65,235.75 = 65,235.75 : x
2. Step 2: Convert to fraction form
   31,321.88/65,235.75 = 65,235.75/x
3. Step 3: Cross multiply
   31,321.88x = 65,235.75 × 65,235.75
4. Step 4: Simplify right side
   31,321.88x = 4,255,703,078.06
5. Step 5: Solve for x
   x = 4,255,703,078.06/31,321.88
6. Step 6: Final answer
   x = 135,870.00