Finding the Third Proportional to 42.75 and 114.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42.75 : 114.75 = 114.75 : x
2. Step 2: Convert to fraction form
   42.75/114.75 = 114.75/x
3. Step 3: Cross multiply
   42.75x = 114.75 × 114.75
4. Step 4: Simplify right side
   42.75x = 13,167.56
5. Step 5: Solve for x
   x = 13,167.56/42.75
6. Step 6: Final answer
   x = 308.01