Finding the Third Proportional to 4,636,521 and 9,958,626

Step by Step Solution

1. Step 1: Write the proportion equation
   4,636,521 : 9,958,626 = 9,958,626 : x
2. Step 2: Convert to fraction form
   4,636,521/9,958,626 = 9,958,626/x
3. Step 3: Cross multiply
   4,636,521x = 9,958,626 × 9,958,626
4. Step 4: Simplify right side
   4,636,521x = 99,174,231,807,876
5. Step 5: Solve for x
   x = 99,174,231,807,876/4,636,521
6. Step 6: Final answer
   x = 21,389,794.59