Finding the Third Proportional to 90.18 and 131.94

Step by Step Solution

1. Step 1: Write the proportion equation
   90.18 : 131.94 = 131.94 : x
2. Step 2: Convert to fraction form
   90.18/131.94 = 131.94/x
3. Step 3: Cross multiply
   90.18x = 131.94 × 131.94
4. Step 4: Simplify right side
   90.18x = 17,408.53
5. Step 5: Solve for x
   x = 17,408.53/90.18
6. Step 6: Final answer
   x = 193.05