Finding the Third Proportional to 1,276.86 and 2,755.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.86 : 2,755.27 = 2,755.27 : x
2. Step 2: Convert to fraction form
   1,276.86/2,755.27 = 2,755.27/x
3. Step 3: Cross multiply
   1,276.86x = 2,755.27 × 2,755.27
4. Step 4: Simplify right side
   1,276.86x = 7,591,488.66
5. Step 5: Solve for x
   x = 7,591,488.66/1,276.86
6. Step 6: Final answer
   x = 5,945.45