Finding the Third Proportional to 9,789,560 and 21,517,288

Step by Step Solution

1. Step 1: Write the proportion equation
   9,789,560 : 21,517,288 = 21,517,288 : x
2. Step 2: Convert to fraction form
   9,789,560/21,517,288 = 21,517,288/x
3. Step 3: Cross multiply
   9,789,560x = 21,517,288 × 21,517,288
4. Step 4: Simplify right side
   9,789,560x = 462,993,682,874,944
5. Step 5: Solve for x
   x = 462,993,682,874,944/9,789,560
6. Step 6: Final answer
   x = 47,294,636.62