Finding the Third Proportional to 2,772.84 and 3,899.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.84 : 3,899.81 = 3,899.81 : x
2. Step 2: Convert to fraction form
   2,772.84/3,899.81 = 3,899.81/x
3. Step 3: Cross multiply
   2,772.84x = 3,899.81 × 3,899.81
4. Step 4: Simplify right side
   2,772.84x = 15,208,537.54
5. Step 5: Solve for x
   x = 15,208,537.54/2,772.84
6. Step 6: Final answer
   x = 5,484.82