Finding the Third Proportional to 1,021.36 and 2,216.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,021.36 : 2,216.11 = 2,216.11 : x
2. Step 2: Convert to fraction form
   1,021.36/2,216.11 = 2,216.11/x
3. Step 3: Cross multiply
   1,021.36x = 2,216.11 × 2,216.11
4. Step 4: Simplify right side
   1,021.36x = 4,911,140.76
5. Step 5: Solve for x
   x = 4,911,140.76/1,021.36
6. Step 6: Final answer
   x = 4,808.44