Finding the Third Proportional to 9,628,682 and 21,146,644

Step by Step Solution

1. Step 1: Write the proportion equation
   9,628,682 : 21,146,644 = 21,146,644 : x
2. Step 2: Convert to fraction form
   9,628,682/21,146,644 = 21,146,644/x
3. Step 3: Cross multiply
   9,628,682x = 21,146,644 × 21,146,644
4. Step 4: Simplify right side
   9,628,682x = 447,180,552,462,736
5. Step 5: Solve for x
   x = 447,180,552,462,736/9,628,682
6. Step 6: Final answer
   x = 46,442,550.75