Finding the Third Proportional to 1,645.03 and 2,215.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645.03 : 2,215.97 = 2,215.97 : x
2. Step 2: Convert to fraction form
   1,645.03/2,215.97 = 2,215.97/x
3. Step 3: Cross multiply
   1,645.03x = 2,215.97 × 2,215.97
4. Step 4: Simplify right side
   1,645.03x = 4,910,517.50
5. Step 5: Solve for x
   x = 4,910,517.50/1,645.03
6. Step 6: Final answer
   x = 2,985.06