Finding the Third Proportional to 1,404.21 and 1,707.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.21 : 1,707.96 = 1,707.96 : x
2. Step 2: Convert to fraction form
   1,404.21/1,707.96 = 1,707.96/x
3. Step 3: Cross multiply
   1,404.21x = 1,707.96 × 1,707.96
4. Step 4: Simplify right side
   1,404.21x = 2,917,130.56
5. Step 5: Solve for x
   x = 2,917,130.56/1,404.21
6. Step 6: Final answer
   x = 2,077.42