Finding the Third Proportional to 103.78 and 151.45

Step by Step Solution

1. Step 1: Write the proportion equation
   103.78 : 151.45 = 151.45 : x
2. Step 2: Convert to fraction form
   103.78/151.45 = 151.45/x
3. Step 3: Cross multiply
   103.78x = 151.45 × 151.45
4. Step 4: Simplify right side
   103.78x = 22,938.05
5. Step 5: Solve for x
   x = 22,938.05/103.78
6. Step 6: Final answer
   x = 221.02