Finding the Third Proportional to 2,145,696 and 4,639,854

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,696 : 4,639,854 = 4,639,854 : x
2. Step 2: Convert to fraction form
   2,145,696/4,639,854 = 4,639,854/x
3. Step 3: Cross multiply
   2,145,696x = 4,639,854 × 4,639,854
4. Step 4: Simplify right side
   2,145,696x = 21,528,245,141,316
5. Step 5: Solve for x
   x = 21,528,245,141,316/2,145,696
6. Step 6: Final answer
   x = 10,033,222.39