Finding the Third Proportional to 54,987.75 and 82,480.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,987.75 : 82,480.50 = 82,480.50 : x
2. Step 2: Convert to fraction form
   54,987.75/82,480.50 = 82,480.50/x
3. Step 3: Cross multiply
   54,987.75x = 82,480.50 × 82,480.50
4. Step 4: Simplify right side
   54,987.75x = 6,803,032,880.25
5. Step 5: Solve for x
   x = 6,803,032,880.25/54,987.75
6. Step 6: Final answer
   x = 123,719.06