Finding the Third Proportional to 383,443 and 806,538

Step by Step Solution

1. Step 1: Write the proportion equation
   383,443 : 806,538 = 806,538 : x
2. Step 2: Convert to fraction form
   383,443/806,538 = 806,538/x
3. Step 3: Cross multiply
   383,443x = 806,538 × 806,538
4. Step 4: Simplify right side
   383,443x = 650,503,545,444
5. Step 5: Solve for x
   x = 650,503,545,444/383,443
6. Step 6: Final answer
   x = 1,696,480.43