Finding the Third Proportional to 3,440 and 5,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,440 : 5,404.50 = 5,404.50 : x
2. Step 2: Convert to fraction form
   3,440/5,404.50 = 5,404.50/x
3. Step 3: Cross multiply
   3,440x = 5,404.50 × 5,404.50
4. Step 4: Simplify right side
   3,440x = 29,208,620.25
5. Step 5: Solve for x
   x = 29,208,620.25/3,440
6. Step 6: Final answer
   x = 8,490.88