Finding the Third Proportional to 131.94 and 286.88

Step by Step Solution

1. Step 1: Write the proportion equation
   131.94 : 286.88 = 286.88 : x
2. Step 2: Convert to fraction form
   131.94/286.88 = 286.88/x
3. Step 3: Cross multiply
   131.94x = 286.88 × 286.88
4. Step 4: Simplify right side
   131.94x = 82,297.27
5. Step 5: Solve for x
   x = 82,297.27/131.94
6. Step 6: Final answer
   x = 623.76