Finding the Third Proportional to 4,142,475 and 8,860,689

Step by Step Solution

1. Step 1: Write the proportion equation
   4,142,475 : 8,860,689 = 8,860,689 : x
2. Step 2: Convert to fraction form
   4,142,475/8,860,689 = 8,860,689/x
3. Step 3: Cross multiply
   4,142,475x = 8,860,689 × 8,860,689
4. Step 4: Simplify right side
   4,142,475x = 78,511,809,554,721
5. Step 5: Solve for x
   x = 78,511,809,554,721/4,142,475
6. Step 6: Final answer
   x = 18,952,874.68