Finding the Third Proportional to 1,000,686 and 2,153,338

Step by Step Solution

1. Step 1: Write the proportion equation
   1,000,686 : 2,153,338 = 2,153,338 : x
2. Step 2: Convert to fraction form
   1,000,686/2,153,338 = 2,153,338/x
3. Step 3: Cross multiply
   1,000,686x = 2,153,338 × 2,153,338
4. Step 4: Simplify right side
   1,000,686x = 4,636,864,542,244
5. Step 5: Solve for x
   x = 4,636,864,542,244/1,000,686
6. Step 6: Final answer
   x = 4,633,685.83