Finding the Third Proportional to 2,799.92 and 4,221.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,799.92 : 4,221.49 = 4,221.49 : x
2. Step 2: Convert to fraction form
   2,799.92/4,221.49 = 4,221.49/x
3. Step 3: Cross multiply
   2,799.92x = 4,221.49 × 4,221.49
4. Step 4: Simplify right side
   2,799.92x = 17,820,996.29
5. Step 5: Solve for x
   x = 17,820,996.29/2,799.92
6. Step 6: Final answer
   x = 6,364.83