Finding the Third Proportional to 143.94 and 314.22

Step by Step Solution

1. Step 1: Write the proportion equation
   143.94 : 314.22 = 314.22 : x
2. Step 2: Convert to fraction form
   143.94/314.22 = 314.22/x
3. Step 3: Cross multiply
   143.94x = 314.22 × 314.22
4. Step 4: Simplify right side
   143.94x = 98,733.42
5. Step 5: Solve for x
   x = 98,733.42/143.94
6. Step 6: Final answer
   x = 685.95