Finding the Third Proportional to 1,281.45 and 1,979.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,281.45 : 1,979.83 = 1,979.83 : x
2. Step 2: Convert to fraction form
   1,281.45/1,979.83 = 1,979.83/x
3. Step 3: Cross multiply
   1,281.45x = 1,979.83 × 1,979.83
4. Step 4: Simplify right side
   1,281.45x = 3,919,738.74
5. Step 5: Solve for x
   x = 3,919,738.74/1,281.45
6. Step 6: Final answer
   x = 3,058.84