Finding the Third Proportional to 857,681 and 1,826,290

Step by Step Solution

1. Step 1: Write the proportion equation
   857,681 : 1,826,290 = 1,826,290 : x
2. Step 2: Convert to fraction form
   857,681/1,826,290 = 1,826,290/x
3. Step 3: Cross multiply
   857,681x = 1,826,290 × 1,826,290
4. Step 4: Simplify right side
   857,681x = 3,335,335,164,100
5. Step 5: Solve for x
   x = 3,335,335,164,100/857,681
6. Step 6: Final answer
   x = 3,888,782.85