Finding the Third Proportional to 143.65 and 214.52

Step by Step Solution

1. Step 1: Write the proportion equation
   143.65 : 214.52 = 214.52 : x
2. Step 2: Convert to fraction form
   143.65/214.52 = 214.52/x
3. Step 3: Cross multiply
   143.65x = 214.52 × 214.52
4. Step 4: Simplify right side
   143.65x = 46,020.31
5. Step 5: Solve for x
   x = 46,020.31/143.65
6. Step 6: Final answer
   x = 320.37