Finding the Third Proportional to 865,218 and 1,863,558

Step by Step Solution

1. Step 1: Write the proportion equation
   865,218 : 1,863,558 = 1,863,558 : x
2. Step 2: Convert to fraction form
   865,218/1,863,558 = 1,863,558/x
3. Step 3: Cross multiply
   865,218x = 1,863,558 × 1,863,558
4. Step 4: Simplify right side
   865,218x = 3,472,848,419,364
5. Step 5: Solve for x
   x = 3,472,848,419,364/865,218
6. Step 6: Final answer
   x = 4,013,842.08