Finding the Third Proportional to 4,558,736 and 7,218,642

Step by Step Solution

1. Step 1: Write the proportion equation
   4,558,736 : 7,218,642 = 7,218,642 : x
2. Step 2: Convert to fraction form
   4,558,736/7,218,642 = 7,218,642/x
3. Step 3: Cross multiply
   4,558,736x = 7,218,642 × 7,218,642
4. Step 4: Simplify right side
   4,558,736x = 52,108,792,324,164
5. Step 5: Solve for x
   x = 52,108,792,324,164/4,558,736
6. Step 6: Final answer
   x = 11,430,535.20