Finding the Third Proportional to 80.81 and 123.94

Step by Step Solution

1. Step 1: Write the proportion equation
   80.81 : 123.94 = 123.94 : x
2. Step 2: Convert to fraction form
   80.81/123.94 = 123.94/x
3. Step 3: Cross multiply
   80.81x = 123.94 × 123.94
4. Step 4: Simplify right side
   80.81x = 15,360.50
5. Step 5: Solve for x
   x = 15,360.50/80.81
6. Step 6: Final answer
   x = 190.08