Finding the Third Proportional to 90.75 and 118.56

Step by Step Solution

1. Step 1: Write the proportion equation
   90.75 : 118.56 = 118.56 : x
2. Step 2: Convert to fraction form
   90.75/118.56 = 118.56/x
3. Step 3: Cross multiply
   90.75x = 118.56 × 118.56
4. Step 4: Simplify right side
   90.75x = 14,057.07
5. Step 5: Solve for x
   x = 14,057.07/90.75
6. Step 6: Final answer
   x = 154.90