Finding the Third Proportional to 9,697,728 and 20,417,856

Step by Step Solution

1. Step 1: Write the proportion equation
   9,697,728 : 20,417,856 = 20,417,856 : x
2. Step 2: Convert to fraction form
   9,697,728/20,417,856 = 20,417,856/x
3. Step 3: Cross multiply
   9,697,728x = 20,417,856 × 20,417,856
4. Step 4: Simplify right side
   9,697,728x = 416,888,843,636,736
5. Step 5: Solve for x
   x = 416,888,843,636,736/9,697,728
6. Step 6: Final answer
   x = 42,988,300.31