Finding the Third Proportional to 1,003,998 and 2,153,580

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003,998 : 2,153,580 = 2,153,580 : x
2. Step 2: Convert to fraction form
   1,003,998/2,153,580 = 2,153,580/x
3. Step 3: Cross multiply
   1,003,998x = 2,153,580 × 2,153,580
4. Step 4: Simplify right side
   1,003,998x = 4,637,906,816,400
5. Step 5: Solve for x
   x = 4,637,906,816,400/1,003,998
6. Step 6: Final answer
   x = 4,619,438.30