Finding the Third Proportional to 73.50 and 131.81

Step by Step Solution

1. Step 1: Write the proportion equation
   73.50 : 131.81 = 131.81 : x
2. Step 2: Convert to fraction form
   73.50/131.81 = 131.81/x
3. Step 3: Cross multiply
   73.50x = 131.81 × 131.81
4. Step 4: Simplify right side
   73.50x = 17,374.54
5. Step 5: Solve for x
   x = 17,374.54/73.50
6. Step 6: Final answer
   x = 236.39