Finding the Third Proportional to 1,018.51 and 2,216.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.51 : 2,216.43 = 2,216.43 : x
2. Step 2: Convert to fraction form
   1,018.51/2,216.43 = 2,216.43/x
3. Step 3: Cross multiply
   1,018.51x = 2,216.43 × 2,216.43
4. Step 4: Simplify right side
   1,018.51x = 4,912,543.24
5. Step 5: Solve for x
   x = 4,912,543.24/1,018.51
6. Step 6: Final answer
   x = 4,823.26