Finding the Third Proportional to 865,210 and 1,863,530

Step by Step Solution

1. Step 1: Write the proportion equation
   865,210 : 1,863,530 = 1,863,530 : x
2. Step 2: Convert to fraction form
   865,210/1,863,530 = 1,863,530/x
3. Step 3: Cross multiply
   865,210x = 1,863,530 × 1,863,530
4. Step 4: Simplify right side
   865,210x = 3,472,744,060,900
5. Step 5: Solve for x
   x = 3,472,744,060,900/865,210
6. Step 6: Final answer
   x = 4,013,758.58