Finding the Third Proportional to 1,418.75 and 2,158.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.75 : 2,158.25 = 2,158.25 : x
2. Step 2: Convert to fraction form
   1,418.75/2,158.25 = 2,158.25/x
3. Step 3: Cross multiply
   1,418.75x = 2,158.25 × 2,158.25
4. Step 4: Simplify right side
   1,418.75x = 4,658,043.06
5. Step 5: Solve for x
   x = 4,658,043.06/1,418.75
6. Step 6: Final answer
   x = 3,283.20