Finding the Third Proportional to 168.94 and 262.31

Step by Step Solution

1. Step 1: Write the proportion equation
   168.94 : 262.31 = 262.31 : x
2. Step 2: Convert to fraction form
   168.94/262.31 = 262.31/x
3. Step 3: Cross multiply
   168.94x = 262.31 × 262.31
4. Step 4: Simplify right side
   168.94x = 68,807.85
5. Step 5: Solve for x
   x = 68,807.85/168.94
6. Step 6: Final answer
   x = 407.30