Finding the Third Proportional to 1,456.59 and 3,143.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.59 : 3,143.72 = 3,143.72 : x
2. Step 2: Convert to fraction form
   1,456.59/3,143.72 = 3,143.72/x
3. Step 3: Cross multiply
   1,456.59x = 3,143.72 × 3,143.72
4. Step 4: Simplify right side
   1,456.59x = 9,882,967.58
5. Step 5: Solve for x
   x = 9,882,967.58/1,456.59
6. Step 6: Final answer
   x = 6,784.99