Finding the Third Proportional to 54,151.50 and 80,778

Step by Step Solution

1. Step 1: Write the proportion equation
   54,151.50 : 80,778 = 80,778 : x
2. Step 2: Convert to fraction form
   54,151.50/80,778 = 80,778/x
3. Step 3: Cross multiply
   54,151.50x = 80,778 × 80,778
4. Step 4: Simplify right side
   54,151.50x = 6,525,085,284
5. Step 5: Solve for x
   x = 6,525,085,284/54,151.50
6. Step 6: Final answer
   x = 120,496.85