Finding the Third Proportional to 33.43 and 72.20

Step by Step Solution

1. Step 1: Write the proportion equation
   33.43 : 72.20 = 72.20 : x
2. Step 2: Convert to fraction form
   33.43/72.20 = 72.20/x
3. Step 3: Cross multiply
   33.43x = 72.20 × 72.20
4. Step 4: Simplify right side
   33.43x = 5,212.83
5. Step 5: Solve for x
   x = 5,212.83/33.43
6. Step 6: Final answer
   x = 155.93