Finding the Third Proportional to 31,559.75 and 68,040.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,559.75 : 68,040.25 = 68,040.25 : x
2. Step 2: Convert to fraction form
   31,559.75/68,040.25 = 68,040.25/x
3. Step 3: Cross multiply
   31,559.75x = 68,040.25 × 68,040.25
4. Step 4: Simplify right side
   31,559.75x = 4,629,475,620.06
5. Step 5: Solve for x
   x = 4,629,475,620.06/31,559.75
6. Step 6: Final answer
   x = 146,689.24