Finding the Third Proportional to 864,836 and 1,862,536

Step by Step Solution

1. Step 1: Write the proportion equation
   864,836 : 1,862,536 = 1,862,536 : x
2. Step 2: Convert to fraction form
   864,836/1,862,536 = 1,862,536/x
3. Step 3: Cross multiply
   864,836x = 1,862,536 × 1,862,536
4. Step 4: Simplify right side
   864,836x = 3,469,040,351,296
5. Step 5: Solve for x
   x = 3,469,040,351,296/864,836
6. Step 6: Final answer
   x = 4,011,211.78