Finding the Third Proportional to 143.02 and 216.42

Step by Step Solution

1. Step 1: Write the proportion equation
   143.02 : 216.42 = 216.42 : x
2. Step 2: Convert to fraction form
   143.02/216.42 = 216.42/x
3. Step 3: Cross multiply
   143.02x = 216.42 × 216.42
4. Step 4: Simplify right side
   143.02x = 46,838.43
5. Step 5: Solve for x
   x = 46,838.43/143.02
6. Step 6: Final answer
   x = 327.51