Finding the Third Proportional to 90.56 and 136.13

Step by Step Solution

1. Step 1: Write the proportion equation
   90.56 : 136.13 = 136.13 : x
2. Step 2: Convert to fraction form
   90.56/136.13 = 136.13/x
3. Step 3: Cross multiply
   90.56x = 136.13 × 136.13
4. Step 4: Simplify right side
   90.56x = 18,530.02
5. Step 5: Solve for x
   x = 18,530.02/90.56
6. Step 6: Final answer
   x = 204.61