Finding the Third Proportional to 855,607 and 1,821,326

Step by Step Solution

1. Step 1: Write the proportion equation
   855,607 : 1,821,326 = 1,821,326 : x
2. Step 2: Convert to fraction form
   855,607/1,821,326 = 1,821,326/x
3. Step 3: Cross multiply
   855,607x = 1,821,326 × 1,821,326
4. Step 4: Simplify right side
   855,607x = 3,317,228,398,276
5. Step 5: Solve for x
   x = 3,317,228,398,276/855,607
6. Step 6: Final answer
   x = 3,877,046.82