Finding the Third Proportional to 3,393,478 and 7,272,722

Step by Step Solution

1. Step 1: Write the proportion equation
   3,393,478 : 7,272,722 = 7,272,722 : x
2. Step 2: Convert to fraction form
   3,393,478/7,272,722 = 7,272,722/x
3. Step 3: Cross multiply
   3,393,478x = 7,272,722 × 7,272,722
4. Step 4: Simplify right side
   3,393,478x = 52,892,485,289,284
5. Step 5: Solve for x
   x = 52,892,485,289,284/3,393,478
6. Step 6: Final answer
   x = 15,586,511.92