Finding the Third Proportional to 31,309.88 and 65,208.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,309.88 : 65,208.38 = 65,208.38 : x
2. Step 2: Convert to fraction form
   31,309.88/65,208.38 = 65,208.38/x
3. Step 3: Cross multiply
   31,309.88x = 65,208.38 × 65,208.38
4. Step 4: Simplify right side
   31,309.88x = 4,252,132,170.14
5. Step 5: Solve for x
   x = 4,252,132,170.14/31,309.88
6. Step 6: Final answer
   x = 135,808.02