Finding the Third Proportional to 1,986,538 and 4,287,823

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986,538 : 4,287,823 = 4,287,823 : x
2. Step 2: Convert to fraction form
   1,986,538/4,287,823 = 4,287,823/x
3. Step 3: Cross multiply
   1,986,538x = 4,287,823 × 4,287,823
4. Step 4: Simplify right side
   1,986,538x = 18,385,426,079,329
5. Step 5: Solve for x
   x = 18,385,426,079,329/1,986,538
6. Step 6: Final answer
   x = 9,255,008.50