Finding the Third Proportional to 4,222,422 and 9,108,396

Step by Step Solution

1. Step 1: Write the proportion equation
   4,222,422 : 9,108,396 = 9,108,396 : x
2. Step 2: Convert to fraction form
   4,222,422/9,108,396 = 9,108,396/x
3. Step 3: Cross multiply
   4,222,422x = 9,108,396 × 9,108,396
4. Step 4: Simplify right side
   4,222,422x = 82,962,877,692,816
5. Step 5: Solve for x
   x = 82,962,877,692,816/4,222,422
6. Step 6: Final answer
   x = 19,648,172.94