Finding the Third Proportional to 1,188,486 and 2,561,772

Step by Step Solution

1. Step 1: Write the proportion equation
   1,188,486 : 2,561,772 = 2,561,772 : x
2. Step 2: Convert to fraction form
   1,188,486/2,561,772 = 2,561,772/x
3. Step 3: Cross multiply
   1,188,486x = 2,561,772 × 2,561,772
4. Step 4: Simplify right side
   1,188,486x = 6,562,675,779,984
5. Step 5: Solve for x
   x = 6,562,675,779,984/1,188,486
6. Step 6: Final answer
   x = 5,521,878.91