Finding the Third Proportional to 99.93 and 154.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99.93 : 154.72 = 154.72 : x
2. Step 2: Convert to fraction form
   99.93/154.72 = 154.72/x
3. Step 3: Cross multiply
   99.93x = 154.72 × 154.72
4. Step 4: Simplify right side
   99.93x = 23,939.10
5. Step 5: Solve for x
   x = 23,939.10/99.93
6. Step 6: Final answer
   x = 239.55