Finding the Third Proportional to 1,279.50 and 2,799

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279.50 : 2,799 = 2,799 : x
2. Step 2: Convert to fraction form
   1,279.50/2,799 = 2,799/x
3. Step 3: Cross multiply
   1,279.50x = 2,799 × 2,799
4. Step 4: Simplify right side
   1,279.50x = 7,834,401
5. Step 5: Solve for x
   x = 7,834,401/1,279.50
6. Step 6: Final answer
   x = 6,123.02