Finding the Third Proportional to 3,804,978 and 8,879,931

Step by Step Solution

1. Step 1: Write the proportion equation
   3,804,978 : 8,879,931 = 8,879,931 : x
2. Step 2: Convert to fraction form
   3,804,978/8,879,931 = 8,879,931/x
3. Step 3: Cross multiply
   3,804,978x = 8,879,931 × 8,879,931
4. Step 4: Simplify right side
   3,804,978x = 78,853,174,564,761
5. Step 5: Solve for x
   x = 78,853,174,564,761/3,804,978
6. Step 6: Final answer
   x = 20,723,687.38