Finding the Third Proportional to 59.80 and 85.43

Step by Step Solution

1. Step 1: Write the proportion equation
   59.80 : 85.43 = 85.43 : x
2. Step 2: Convert to fraction form
   59.80/85.43 = 85.43/x
3. Step 3: Cross multiply
   59.80x = 85.43 × 85.43
4. Step 4: Simplify right side
   59.80x = 7,298.23
5. Step 5: Solve for x
   x = 7,298.23/59.80
6. Step 6: Final answer
   x = 122.04