Finding the Third Proportional to 3,974,578 and 8,732,986

Step by Step Solution

1. Step 1: Write the proportion equation
   3,974,578 : 8,732,986 = 8,732,986 : x
2. Step 2: Convert to fraction form
   3,974,578/8,732,986 = 8,732,986/x
3. Step 3: Cross multiply
   3,974,578x = 8,732,986 × 8,732,986
4. Step 4: Simplify right side
   3,974,578x = 76,265,044,476,196
5. Step 5: Solve for x
   x = 76,265,044,476,196/3,974,578
6. Step 6: Final answer
   x = 19,188,211.80