Finding the Third Proportional to 3,393,456 and 7,272,678

Step by Step Solution

1. Step 1: Write the proportion equation
   3,393,456 : 7,272,678 = 7,272,678 : x
2. Step 2: Convert to fraction form
   3,393,456/7,272,678 = 7,272,678/x
3. Step 3: Cross multiply
   3,393,456x = 7,272,678 × 7,272,678
4. Step 4: Simplify right side
   3,393,456x = 52,891,845,291,684
5. Step 5: Solve for x
   x = 52,891,845,291,684/3,393,456
6. Step 6: Final answer
   x = 15,586,424.37