Finding the Third Proportional to 1,404.94 and 2,170.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.94 : 2,170.78 = 2,170.78 : x
2. Step 2: Convert to fraction form
   1,404.94/2,170.78 = 2,170.78/x
3. Step 3: Cross multiply
   1,404.94x = 2,170.78 × 2,170.78
4. Step 4: Simplify right side
   1,404.94x = 4,712,291.24
5. Step 5: Solve for x
   x = 4,712,291.24/1,404.94
6. Step 6: Final answer
   x = 3,354.09