Finding the Third Proportional to 9,964,040 and 21,456,256

Step by Step Solution

1. Step 1: Write the proportion equation
   9,964,040 : 21,456,256 = 21,456,256 : x
2. Step 2: Convert to fraction form
   9,964,040/21,456,256 = 21,456,256/x
3. Step 3: Cross multiply
   9,964,040x = 21,456,256 × 21,456,256
4. Step 4: Simplify right side
   9,964,040x = 460,370,921,537,536
5. Step 5: Solve for x
   x = 460,370,921,537,536/9,964,040
6. Step 6: Final answer
   x = 46,203,239.00