Finding the Third Proportional to 54.16 and 115.90

Step by Step Solution

1. Step 1: Write the proportion equation
   54.16 : 115.90 = 115.90 : x
2. Step 2: Convert to fraction form
   54.16/115.90 = 115.90/x
3. Step 3: Cross multiply
   54.16x = 115.90 × 115.90
4. Step 4: Simplify right side
   54.16x = 13,432.45
5. Step 5: Solve for x
   x = 13,432.45/54.16
6. Step 6: Final answer
   x = 248.00