Finding the Third Proportional to 90.66 and 136.03

Step by Step Solution

1. Step 1: Write the proportion equation
   90.66 : 136.03 = 136.03 : x
2. Step 2: Convert to fraction form
   90.66/136.03 = 136.03/x
3. Step 3: Cross multiply
   90.66x = 136.03 × 136.03
4. Step 4: Simplify right side
   90.66x = 18,504.50
5. Step 5: Solve for x
   x = 18,504.50/90.66
6. Step 6: Final answer
   x = 204.12