Finding the Third Proportional to 100.03 and 154.78

Step by Step Solution

1. Step 1: Write the proportion equation
   100.03 : 154.78 = 154.78 : x
2. Step 2: Convert to fraction form
   100.03/154.78 = 154.78/x
3. Step 3: Cross multiply
   100.03x = 154.78 × 154.78
4. Step 4: Simplify right side
   100.03x = 23,957.24
5. Step 5: Solve for x
   x = 23,957.24/100.03
6. Step 6: Final answer
   x = 239.50