Finding the Third Proportional to 4,658,256 and 9,876,384

Step by Step Solution

1. Step 1: Write the proportion equation
   4,658,256 : 9,876,384 = 9,876,384 : x
2. Step 2: Convert to fraction form
   4,658,256/9,876,384 = 9,876,384/x
3. Step 3: Cross multiply
   4,658,256x = 9,876,384 × 9,876,384
4. Step 4: Simplify right side
   4,658,256x = 97,542,960,915,456
5. Step 5: Solve for x
   x = 97,542,960,915,456/4,658,256
6. Step 6: Final answer
   x = 20,939,802.56