Finding the Third Proportional to 857,890 and 1,856,996

Step by Step Solution

1. Step 1: Write the proportion equation
   857,890 : 1,856,996 = 1,856,996 : x
2. Step 2: Convert to fraction form
   857,890/1,856,996 = 1,856,996/x
3. Step 3: Cross multiply
   857,890x = 1,856,996 × 1,856,996
4. Step 4: Simplify right side
   857,890x = 3,448,434,144,016
5. Step 5: Solve for x
   x = 3,448,434,144,016/857,890
6. Step 6: Final answer
   x = 4,019,669.36