Finding the Third Proportional to 1,142.06 and 2,479.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.06 : 2,479.69 = 2,479.69 : x
2. Step 2: Convert to fraction form
   1,142.06/2,479.69 = 2,479.69/x
3. Step 3: Cross multiply
   1,142.06x = 2,479.69 × 2,479.69
4. Step 4: Simplify right side
   1,142.06x = 6,148,850.10
5. Step 5: Solve for x
   x = 6,148,850.10/1,142.06
6. Step 6: Final answer
   x = 5,383.99