Finding the Third Proportional to 4,222,468 and 9,108,488

Step by Step Solution

1. Step 1: Write the proportion equation
   4,222,468 : 9,108,488 = 9,108,488 : x
2. Step 2: Convert to fraction form
   4,222,468/9,108,488 = 9,108,488/x
3. Step 3: Cross multiply
   4,222,468x = 9,108,488 × 9,108,488
4. Step 4: Simplify right side
   4,222,468x = 82,964,553,646,144
5. Step 5: Solve for x
   x = 82,964,553,646,144/4,222,468
6. Step 6: Final answer
   x = 19,648,355.81