Finding the Third Proportional to 60.56 and 131.81

Step by Step Solution

1. Step 1: Write the proportion equation
   60.56 : 131.81 = 131.81 : x
2. Step 2: Convert to fraction form
   60.56/131.81 = 131.81/x
3. Step 3: Cross multiply
   60.56x = 131.81 × 131.81
4. Step 4: Simplify right side
   60.56x = 17,374.54
5. Step 5: Solve for x
   x = 17,374.54/60.56
6. Step 6: Final answer
   x = 286.89