Finding the Third Proportional to 1,200,488 and 2,561,680

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,488 : 2,561,680 = 2,561,680 : x
2. Step 2: Convert to fraction form
   1,200,488/2,561,680 = 2,561,680/x
3. Step 3: Cross multiply
   1,200,488x = 2,561,680 × 2,561,680
4. Step 4: Simplify right side
   1,200,488x = 6,562,204,422,400
5. Step 5: Solve for x
   x = 6,562,204,422,400/1,200,488
6. Step 6: Final answer
   x = 5,466,280.73