Finding the Third Proportional to 100.55 and 149.55

Step by Step Solution

1. Step 1: Write the proportion equation
   100.55 : 149.55 = 149.55 : x
2. Step 2: Convert to fraction form
   100.55/149.55 = 149.55/x
3. Step 3: Cross multiply
   100.55x = 149.55 × 149.55
4. Step 4: Simplify right side
   100.55x = 22,366.60
5. Step 5: Solve for x
   x = 22,366.60/100.55
6. Step 6: Final answer
   x = 222.45