Finding the Third Proportional to 103.89 and 155.14

Step by Step Solution

1. Step 1: Write the proportion equation
   103.89 : 155.14 = 155.14 : x
2. Step 2: Convert to fraction form
   103.89/155.14 = 155.14/x
3. Step 3: Cross multiply
   103.89x = 155.14 × 155.14
4. Step 4: Simplify right side
   103.89x = 24,069.83
5. Step 5: Solve for x
   x = 24,069.83/103.89
6. Step 6: Final answer
   x = 231.69