Finding the Third Proportional to 619,249.50 and 1,280,974.50

Step by Step Solution

1. Step 1: Write the proportion equation
   619,249.50 : 1,280,974.50 = 1,280,974.50 : x
2. Step 2: Convert to fraction form
   619,249.50/1,280,974.50 = 1,280,974.50/x
3. Step 3: Cross multiply
   619,249.50x = 1,280,974.50 × 1,280,974.50
4. Step 4: Simplify right side
   619,249.50x = 1,640,895,669,650.25
5. Step 5: Solve for x
   x = 1,640,895,669,650.25/619,249.50
6. Step 6: Final answer
   x = 2,649,813.48