Finding the Third Proportional to 4,269,920 and 9,379,648

Step by Step Solution

1. Step 1: Write the proportion equation
   4,269,920 : 9,379,648 = 9,379,648 : x
2. Step 2: Convert to fraction form
   4,269,920/9,379,648 = 9,379,648/x
3. Step 3: Cross multiply
   4,269,920x = 9,379,648 × 9,379,648
4. Step 4: Simplify right side
   4,269,920x = 87,977,796,603,904
5. Step 5: Solve for x
   x = 87,977,796,603,904/4,269,920
6. Step 6: Final answer
   x = 20,604,085.46