Finding the Third Proportional to 1,083,576 and 1,621,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083,576 : 1,621,440 = 1,621,440 : x
2. Step 2: Convert to fraction form
   1,083,576/1,621,440 = 1,621,440/x
3. Step 3: Cross multiply
   1,083,576x = 1,621,440 × 1,621,440
4. Step 4: Simplify right side
   1,083,576x = 2,629,067,673,600
5. Step 5: Solve for x
   x = 2,629,067,673,600/1,083,576
6. Step 6: Final answer
   x = 2,426,288.21