Finding the Third Proportional to 6,220,957 and 8,895,978

Step by Step Solution

1. Step 1: Write the proportion equation
   6,220,957 : 8,895,978 = 8,895,978 : x
2. Step 2: Convert to fraction form
   6,220,957/8,895,978 = 8,895,978/x
3. Step 3: Cross multiply
   6,220,957x = 8,895,978 × 8,895,978
4. Step 4: Simplify right side
   6,220,957x = 79,138,424,576,484
5. Step 5: Solve for x
   x = 79,138,424,576,484/6,220,957
6. Step 6: Final answer
   x = 12,721,262.11