Finding the Third Proportional to 2,722.78 and 5,800.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.78 : 5,800.78 = 5,800.78 : x
2. Step 2: Convert to fraction form
   2,722.78/5,800.78 = 5,800.78/x
3. Step 3: Cross multiply
   2,722.78x = 5,800.78 × 5,800.78
4. Step 4: Simplify right side
   2,722.78x = 33,649,063.11
5. Step 5: Solve for x
   x = 33,649,063.11/2,722.78
6. Step 6: Final answer
   x = 12,358.34