Finding the Third Proportional to 2,409.12 and 5,279.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,409.12 : 5,279.55 = 5,279.55 : x
2. Step 2: Convert to fraction form
   2,409.12/5,279.55 = 5,279.55/x
3. Step 3: Cross multiply
   2,409.12x = 5,279.55 × 5,279.55
4. Step 4: Simplify right side
   2,409.12x = 27,873,697.70
5. Step 5: Solve for x
   x = 27,873,697.70/2,409.12
6. Step 6: Final answer
   x = 11,570.09