Finding the Third Proportional to 9,923,878 and 21,368,372

Step by Step Solution

1. Step 1: Write the proportion equation
   9,923,878 : 21,368,372 = 21,368,372 : x
2. Step 2: Convert to fraction form
   9,923,878/21,368,372 = 21,368,372/x
3. Step 3: Cross multiply
   9,923,878x = 21,368,372 × 21,368,372
4. Step 4: Simplify right side
   9,923,878x = 456,607,321,930,384
5. Step 5: Solve for x
   x = 456,607,321,930,384/9,923,878
6. Step 6: Final answer
   x = 46,010,976.95