Finding the Third Proportional to 7,797,978 and 17,388,951

Step by Step Solution

1. Step 1: Write the proportion equation
   7,797,978 : 17,388,951 = 17,388,951 : x
2. Step 2: Convert to fraction form
   7,797,978/17,388,951 = 17,388,951/x
3. Step 3: Cross multiply
   7,797,978x = 17,388,951 × 17,388,951
4. Step 4: Simplify right side
   7,797,978x = 302,375,616,880,401
5. Step 5: Solve for x
   x = 302,375,616,880,401/7,797,978
6. Step 6: Final answer
   x = 38,776,156.70