Finding the Third Proportional to 2,208,978 and 4,839,561

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208,978 : 4,839,561 = 4,839,561 : x
2. Step 2: Convert to fraction form
   2,208,978/4,839,561 = 4,839,561/x
3. Step 3: Cross multiply
   2,208,978x = 4,839,561 × 4,839,561
4. Step 4: Simplify right side
   2,208,978x = 23,421,350,672,721
5. Step 5: Solve for x
   x = 23,421,350,672,721/2,208,978
6. Step 6: Final answer
   x = 10,602,799.43