Finding the Third Proportional to 1,661.13 and 3,279.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.13 : 3,279.55 = 3,279.55 : x
2. Step 2: Convert to fraction form
   1,661.13/3,279.55 = 3,279.55/x
3. Step 3: Cross multiply
   1,661.13x = 3,279.55 × 3,279.55
4. Step 4: Simplify right side
   1,661.13x = 10,755,453.33
5. Step 5: Solve for x
   x = 10,755,453.33/1,661.13
6. Step 6: Final answer
   x = 6,474.77