Finding the Third Proportional to 55,284.50 and 82,839.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,284.50 : 82,839.50 = 82,839.50 : x
2. Step 2: Convert to fraction form
   55,284.50/82,839.50 = 82,839.50/x
3. Step 3: Cross multiply
   55,284.50x = 82,839.50 × 82,839.50
4. Step 4: Simplify right side
   55,284.50x = 6,862,382,760.25
5. Step 5: Solve for x
   x = 6,862,382,760.25/55,284.50
6. Step 6: Final answer
   x = 124,128.51