Finding the Third Proportional to 857,806 and 1,856,831

Step by Step Solution

1. Step 1: Write the proportion equation
   857,806 : 1,856,831 = 1,856,831 : x
2. Step 2: Convert to fraction form
   857,806/1,856,831 = 1,856,831/x
3. Step 3: Cross multiply
   857,806x = 1,856,831 × 1,856,831
4. Step 4: Simplify right side
   857,806x = 3,447,821,362,561
5. Step 5: Solve for x
   x = 3,447,821,362,561/857,806
6. Step 6: Final answer
   x = 4,019,348.62