Finding the Third Proportional to 30,708.25 and 65,107.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,708.25 : 65,107.25 = 65,107.25 : x
2. Step 2: Convert to fraction form
   30,708.25/65,107.25 = 65,107.25/x
3. Step 3: Cross multiply
   30,708.25x = 65,107.25 × 65,107.25
4. Step 4: Simplify right side
   30,708.25x = 4,238,954,002.56
5. Step 5: Solve for x
   x = 4,238,954,002.56/30,708.25
6. Step 6: Final answer
   x = 138,039.58