Finding the Third Proportional to 9,628,588 and 21,146,456

Step by Step Solution

1. Step 1: Write the proportion equation
   9,628,588 : 21,146,456 = 21,146,456 : x
2. Step 2: Convert to fraction form
   9,628,588/21,146,456 = 21,146,456/x
3. Step 3: Cross multiply
   9,628,588x = 21,146,456 × 21,146,456
4. Step 4: Simplify right side
   9,628,588x = 447,172,601,359,936
5. Step 5: Solve for x
   x = 447,172,601,359,936/9,628,588
6. Step 6: Final answer
   x = 46,442,178.37