Finding the Third Proportional to 4,431,978 and 9,525,969

Step by Step Solution

1. Step 1: Write the proportion equation
   4,431,978 : 9,525,969 = 9,525,969 : x
2. Step 2: Convert to fraction form
   4,431,978/9,525,969 = 9,525,969/x
3. Step 3: Cross multiply
   4,431,978x = 9,525,969 × 9,525,969
4. Step 4: Simplify right side
   4,431,978x = 90,744,085,388,961
5. Step 5: Solve for x
   x = 90,744,085,388,961/4,431,978
6. Step 6: Final answer
   x = 20,474,850.14