Finding the Third Proportional to 856,869 and 1,861,242

Step by Step Solution

1. Step 1: Write the proportion equation
   856,869 : 1,861,242 = 1,861,242 : x
2. Step 2: Convert to fraction form
   856,869/1,861,242 = 1,861,242/x
3. Step 3: Cross multiply
   856,869x = 1,861,242 × 1,861,242
4. Step 4: Simplify right side
   856,869x = 3,464,221,782,564
5. Step 5: Solve for x
   x = 3,464,221,782,564/856,869
6. Step 6: Final answer
   x = 4,042,883.78