Finding the Third Proportional to 2,779.31 and 5,911.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,779.31 : 5,911.73 = 5,911.73 : x
2. Step 2: Convert to fraction form
   2,779.31/5,911.73 = 5,911.73/x
3. Step 3: Cross multiply
   2,779.31x = 5,911.73 × 5,911.73
4. Step 4: Simplify right side
   2,779.31x = 34,948,603.32
5. Step 5: Solve for x
   x = 34,948,603.32/2,779.31
6. Step 6: Final answer
   x = 12,574.55