Finding the Third Proportional to 558.84 and 745.31

Step by Step Solution

1. Step 1: Write the proportion equation
   558.84 : 745.31 = 745.31 : x
2. Step 2: Convert to fraction form
   558.84/745.31 = 745.31/x
3. Step 3: Cross multiply
   558.84x = 745.31 × 745.31
4. Step 4: Simplify right side
   558.84x = 555,490.72
5. Step 5: Solve for x
   x = 555,490.72/558.84
6. Step 6: Final answer
   x = 994.00