Finding the Third Proportional to 1,008.39 and 2,215.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.39 : 2,215.16 = 2,215.16 : x
2. Step 2: Convert to fraction form
   1,008.39/2,215.16 = 2,215.16/x
3. Step 3: Cross multiply
   1,008.39x = 2,215.16 × 2,215.16
4. Step 4: Simplify right side
   1,008.39x = 4,906,934.52
5. Step 5: Solve for x
   x = 4,906,934.52/1,008.39
6. Step 6: Final answer
   x = 4,866.12