Finding the Third Proportional to 91.88 and 141.38

Step by Step Solution

1. Step 1: Write the proportion equation
   91.88 : 141.38 = 141.38 : x
2. Step 2: Convert to fraction form
   91.88/141.38 = 141.38/x
3. Step 3: Cross multiply
   91.88x = 141.38 × 141.38
4. Step 4: Simplify right side
   91.88x = 19,986.89
5. Step 5: Solve for x
   x = 19,986.89/91.88
6. Step 6: Final answer
   x = 217.54