Finding the Third Proportional to 9,854,768 and 21,071,456

Step by Step Solution

1. Step 1: Write the proportion equation
   9,854,768 : 21,071,456 = 21,071,456 : x
2. Step 2: Convert to fraction form
   9,854,768/21,071,456 = 21,071,456/x
3. Step 3: Cross multiply
   9,854,768x = 21,071,456 × 21,071,456
4. Step 4: Simplify right side
   9,854,768x = 444,006,257,959,936
5. Step 5: Solve for x
   x = 444,006,257,959,936/9,854,768
6. Step 6: Final answer
   x = 45,054,968.11