Finding the Third Proportional to 489.31 and 1,069.38

Step by Step Solution

1. Step 1: Write the proportion equation
   489.31 : 1,069.38 = 1,069.38 : x
2. Step 2: Convert to fraction form
   489.31/1,069.38 = 1,069.38/x
3. Step 3: Cross multiply
   489.31x = 1,069.38 × 1,069.38
4. Step 4: Simplify right side
   489.31x = 1,143,562.89
5. Step 5: Solve for x
   x = 1,143,562.89/489.31
6. Step 6: Final answer
   x = 2,337.08