Finding the Third Proportional to 10,436,962 and 21,167,508

Step by Step Solution

1. Step 1: Write the proportion equation
   10,436,962 : 21,167,508 = 21,167,508 : x
2. Step 2: Convert to fraction form
   10,436,962/21,167,508 = 21,167,508/x
3. Step 3: Cross multiply
   10,436,962x = 21,167,508 × 21,167,508
4. Step 4: Simplify right side
   10,436,962x = 448,063,394,930,064
5. Step 5: Solve for x
   x = 448,063,394,930,064/10,436,962
6. Step 6: Final answer
   x = 42,930,442.30