Finding the Third Proportional to 1,339.82 and 2,743.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.82 : 2,743.72 = 2,743.72 : x
2. Step 2: Convert to fraction form
   1,339.82/2,743.72 = 2,743.72/x
3. Step 3: Cross multiply
   1,339.82x = 2,743.72 × 2,743.72
4. Step 4: Simplify right side
   1,339.82x = 7,527,981.86
5. Step 5: Solve for x
   x = 7,527,981.86/1,339.82
6. Step 6: Final answer
   x = 5,618.64