Finding the Third Proportional to 1,002,840 and 2,145,648

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002,840 : 2,145,648 = 2,145,648 : x
2. Step 2: Convert to fraction form
   1,002,840/2,145,648 = 2,145,648/x
3. Step 3: Cross multiply
   1,002,840x = 2,145,648 × 2,145,648
4. Step 4: Simplify right side
   1,002,840x = 4,603,805,339,904
5. Step 5: Solve for x
   x = 4,603,805,339,904/1,002,840
6. Step 6: Final answer
   x = 4,590,767.56