Finding the Third Proportional to 1,225.76 and 2,679.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.76 : 2,679.33 = 2,679.33 : x
2. Step 2: Convert to fraction form
   1,225.76/2,679.33 = 2,679.33/x
3. Step 3: Cross multiply
   1,225.76x = 2,679.33 × 2,679.33
4. Step 4: Simplify right side
   1,225.76x = 7,178,799.20
5. Step 5: Solve for x
   x = 7,178,799.20/1,225.76
6. Step 6: Final answer
   x = 5,856.62