Finding the Third Proportional to 72.42 and 153.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72.42 : 153.84 = 153.84 : x
2. Step 2: Convert to fraction form
   72.42/153.84 = 153.84/x
3. Step 3: Cross multiply
   72.42x = 153.84 × 153.84
4. Step 4: Simplify right side
   72.42x = 23,667.90
5. Step 5: Solve for x
   x = 23,667.90/72.42
6. Step 6: Final answer
   x = 326.81