Finding the Third Proportional to 11,822,972 and 17,819,021

Step by Step Solution

1. Step 1: Write the proportion equation
   11,822,972 : 17,819,021 = 17,819,021 : x
2. Step 2: Convert to fraction form
   11,822,972/17,819,021 = 17,819,021/x
3. Step 3: Cross multiply
   11,822,972x = 17,819,021 × 17,819,021
4. Step 4: Simplify right side
   11,822,972x = 317,517,509,398,441
5. Step 5: Solve for x
   x = 317,517,509,398,441/11,822,972
6. Step 6: Final answer
   x = 26,855,980.83