Finding the Third Proportional to 858,087 and 1,863,789

Step by Step Solution

1. Step 1: Write the proportion equation
   858,087 : 1,863,789 = 1,863,789 : x
2. Step 2: Convert to fraction form
   858,087/1,863,789 = 1,863,789/x
3. Step 3: Cross multiply
   858,087x = 1,863,789 × 1,863,789
4. Step 4: Simplify right side
   858,087x = 3,473,709,436,521
5. Step 5: Solve for x
   x = 3,473,709,436,521/858,087
6. Step 6: Final answer
   x = 4,048,201.91