Finding the Third Proportional to 1,018.55 and 2,231.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.55 : 2,231.86 = 2,231.86 : x
2. Step 2: Convert to fraction form
   1,018.55/2,231.86 = 2,231.86/x
3. Step 3: Cross multiply
   1,018.55x = 2,231.86 × 2,231.86
4. Step 4: Simplify right side
   1,018.55x = 4,981,196.27
5. Step 5: Solve for x
   x = 4,981,196.27/1,018.55
6. Step 6: Final answer
   x = 4,890.49