Finding the Third Proportional to 54,144.50 and 83,329.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,144.50 : 83,329.50 = 83,329.50 : x
2. Step 2: Convert to fraction form
   54,144.50/83,329.50 = 83,329.50/x
3. Step 3: Cross multiply
   54,144.50x = 83,329.50 × 83,329.50
4. Step 4: Simplify right side
   54,144.50x = 6,943,805,570.25
5. Step 5: Solve for x
   x = 6,943,805,570.25/54,144.50
6. Step 6: Final answer
   x = 128,245.82