Finding the Third Proportional to 4,601,256 and 9,678,336

Step by Step Solution

1. Step 1: Write the proportion equation
   4,601,256 : 9,678,336 = 9,678,336 : x
2. Step 2: Convert to fraction form
   4,601,256/9,678,336 = 9,678,336/x
3. Step 3: Cross multiply
   4,601,256x = 9,678,336 × 9,678,336
4. Step 4: Simplify right side
   4,601,256x = 93,670,187,728,896
5. Step 5: Solve for x
   x = 93,670,187,728,896/4,601,256
6. Step 6: Final answer
   x = 20,357,525.80