Finding the Third Proportional to 85.41 and 124.78

Step by Step Solution

1. Step 1: Write the proportion equation
   85.41 : 124.78 = 124.78 : x
2. Step 2: Convert to fraction form
   85.41/124.78 = 124.78/x
3. Step 3: Cross multiply
   85.41x = 124.78 × 124.78
4. Step 4: Simplify right side
   85.41x = 15,570.36
5. Step 5: Solve for x
   x = 15,570.36/85.41
6. Step 6: Final answer
   x = 182.31