Finding the Third Proportional to 31,839.75 and 69,801.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,839.75 : 69,801.75 = 69,801.75 : x
2. Step 2: Convert to fraction form
   31,839.75/69,801.75 = 69,801.75/x
3. Step 3: Cross multiply
   31,839.75x = 69,801.75 × 69,801.75
4. Step 4: Simplify right side
   31,839.75x = 4,872,284,303.06
5. Step 5: Solve for x
   x = 4,872,284,303.06/31,839.75
6. Step 6: Final answer
   x = 153,025.21