Finding the Third Proportional to 2,215.69 and 3,150.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.69 : 3,150.56 = 3,150.56 : x
2. Step 2: Convert to fraction form
   2,215.69/3,150.56 = 3,150.56/x
3. Step 3: Cross multiply
   2,215.69x = 3,150.56 × 3,150.56
4. Step 4: Simplify right side
   2,215.69x = 9,926,044.07
5. Step 5: Solve for x
   x = 9,926,044.07/2,215.69
6. Step 6: Final answer
   x = 4,479.89