Finding the Third Proportional to 9,628,684 and 21,146,648

Step by Step Solution

1. Step 1: Write the proportion equation
   9,628,684 : 21,146,648 = 21,146,648 : x
2. Step 2: Convert to fraction form
   9,628,684/21,146,648 = 21,146,648/x
3. Step 3: Cross multiply
   9,628,684x = 21,146,648 × 21,146,648
4. Step 4: Simplify right side
   9,628,684x = 447,180,721,635,904
5. Step 5: Solve for x
   x = 447,180,721,635,904/9,628,684
6. Step 6: Final answer
   x = 46,442,558.68