Finding the Third Proportional to 4,636,469 and 9,958,522

Step by Step Solution

1. Step 1: Write the proportion equation
   4,636,469 : 9,958,522 = 9,958,522 : x
2. Step 2: Convert to fraction form
   4,636,469/9,958,522 = 9,958,522/x
3. Step 3: Cross multiply
   4,636,469x = 9,958,522 × 9,958,522
4. Step 4: Simplify right side
   4,636,469x = 99,172,160,424,484
5. Step 5: Solve for x
   x = 99,172,160,424,484/4,636,469
6. Step 6: Final answer
   x = 21,389,587.73