Finding the Third Proportional to 90.49 and 144.91

Step by Step Solution

1. Step 1: Write the proportion equation
   90.49 : 144.91 = 144.91 : x
2. Step 2: Convert to fraction form
   90.49/144.91 = 144.91/x
3. Step 3: Cross multiply
   90.49x = 144.91 × 144.91
4. Step 4: Simplify right side
   90.49x = 21,000.09
5. Step 5: Solve for x
   x = 21,000.09/90.49
6. Step 6: Final answer
   x = 232.07