Finding the Third Proportional to 4,311,878 and 9,388,732

Step by Step Solution

1. Step 1: Write the proportion equation
   4,311,878 : 9,388,732 = 9,388,732 : x
2. Step 2: Convert to fraction form
   4,311,878/9,388,732 = 9,388,732/x
3. Step 3: Cross multiply
   4,311,878x = 9,388,732 × 9,388,732
4. Step 4: Simplify right side
   4,311,878x = 88,148,288,567,824
5. Step 5: Solve for x
   x = 88,148,288,567,824/4,311,878
6. Step 6: Final answer
   x = 20,443,131.41