Finding the Third Proportional to 9,686,085 and 21,261,456

Step by Step Solution

1. Step 1: Write the proportion equation
   9,686,085 : 21,261,456 = 21,261,456 : x
2. Step 2: Convert to fraction form
   9,686,085/21,261,456 = 21,261,456/x
3. Step 3: Cross multiply
   9,686,085x = 21,261,456 × 21,261,456
4. Step 4: Simplify right side
   9,686,085x = 452,049,511,239,936
5. Step 5: Solve for x
   x = 452,049,511,239,936/9,686,085
6. Step 6: Final answer
   x = 46,669,992.18