Finding the Third Proportional to 3,393,644 and 7,318,642

Step by Step Solution

1. Step 1: Write the proportion equation
   3,393,644 : 7,318,642 = 7,318,642 : x
2. Step 2: Convert to fraction form
   3,393,644/7,318,642 = 7,318,642/x
3. Step 3: Cross multiply
   3,393,644x = 7,318,642 × 7,318,642
4. Step 4: Simplify right side
   3,393,644x = 53,562,520,724,164
5. Step 5: Solve for x
   x = 53,562,520,724,164/3,393,644
6. Step 6: Final answer
   x = 15,783,187.84