Finding the Third Proportional to 124,776 and 276,198.75

Step by Step Solution

1. Step 1: Write the proportion equation
   124,776 : 276,198.75 = 276,198.75 : x
2. Step 2: Convert to fraction form
   124,776/276,198.75 = 276,198.75/x
3. Step 3: Cross multiply
   124,776x = 276,198.75 × 276,198.75
4. Step 4: Simplify right side
   124,776x = 76,285,749,501.56
5. Step 5: Solve for x
   x = 76,285,749,501.56/124,776
6. Step 6: Final answer
   x = 611,381.59