Finding the Third Proportional to 10,436,968 and 21,167,520

Step by Step Solution

1. Step 1: Write the proportion equation
   10,436,968 : 21,167,520 = 21,167,520 : x
2. Step 2: Convert to fraction form
   10,436,968/21,167,520 = 21,167,520/x
3. Step 3: Cross multiply
   10,436,968x = 21,167,520 × 21,167,520
4. Step 4: Simplify right side
   10,436,968x = 448,063,902,950,400
5. Step 5: Solve for x
   x = 448,063,902,950,400/10,436,968
6. Step 6: Final answer
   x = 42,930,466.30