Finding the Third Proportional to 1,644.75 and 3,559.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.75 : 3,559.50 = 3,559.50 : x
2. Step 2: Convert to fraction form
   1,644.75/3,559.50 = 3,559.50/x
3. Step 3: Cross multiply
   1,644.75x = 3,559.50 × 3,559.50
4. Step 4: Simplify right side
   1,644.75x = 12,670,040.25
5. Step 5: Solve for x
   x = 12,670,040.25/1,644.75
6. Step 6: Final answer
   x = 7,703.32