Finding the Third Proportional to 858,659 and 1,864,810

Step by Step Solution

1. Step 1: Write the proportion equation
   858,659 : 1,864,810 = 1,864,810 : x
2. Step 2: Convert to fraction form
   858,659/1,864,810 = 1,864,810/x
3. Step 3: Cross multiply
   858,659x = 1,864,810 × 1,864,810
4. Step 4: Simplify right side
   858,659x = 3,477,516,336,100
5. Step 5: Solve for x
   x = 3,477,516,336,100/858,659
6. Step 6: Final answer
   x = 4,049,938.73