Finding the Third Proportional to 121.69 and 165.38

Step by Step Solution

1. Step 1: Write the proportion equation
   121.69 : 165.38 = 165.38 : x
2. Step 2: Convert to fraction form
   121.69/165.38 = 165.38/x
3. Step 3: Cross multiply
   121.69x = 165.38 × 165.38
4. Step 4: Simplify right side
   121.69x = 27,348.89
5. Step 5: Solve for x
   x = 27,348.89/121.69
6. Step 6: Final answer
   x = 224.75