Finding the Third Proportional to 670.62 and 1,443.76

Step by Step Solution

1. Step 1: Write the proportion equation
   670.62 : 1,443.76 = 1,443.76 : x
2. Step 2: Convert to fraction form
   670.62/1,443.76 = 1,443.76/x
3. Step 3: Cross multiply
   670.62x = 1,443.76 × 1,443.76
4. Step 4: Simplify right side
   670.62x = 2,084,447.90
5. Step 5: Solve for x
   x = 2,084,447.90/670.62
6. Step 6: Final answer
   x = 3,108.23