Finding the Third Proportional to 2,163,415 and 4,616,391

Step by Step Solution

1. Step 1: Write the proportion equation
   2,163,415 : 4,616,391 = 4,616,391 : x
2. Step 2: Convert to fraction form
   2,163,415/4,616,391 = 4,616,391/x
3. Step 3: Cross multiply
   2,163,415x = 4,616,391 × 4,616,391
4. Step 4: Simplify right side
   2,163,415x = 21,311,065,864,881
5. Step 5: Solve for x
   x = 21,311,065,864,881/2,163,415
6. Step 6: Final answer
   x = 9,850,660.12