Finding the Third Proportional to 103.78 and 151.88

Step by Step Solution

1. Step 1: Write the proportion equation
   103.78 : 151.88 = 151.88 : x
2. Step 2: Convert to fraction form
   103.78/151.88 = 151.88/x
3. Step 3: Cross multiply
   103.78x = 151.88 × 151.88
4. Step 4: Simplify right side
   103.78x = 23,066.02
5. Step 5: Solve for x
   x = 23,066.02/103.78
6. Step 6: Final answer
   x = 222.26