Finding the Third Proportional to 3,428,448 and 7,372,866

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428,448 : 7,372,866 = 7,372,866 : x
2. Step 2: Convert to fraction form
   3,428,448/7,372,866 = 7,372,866/x
3. Step 3: Cross multiply
   3,428,448x = 7,372,866 × 7,372,866
4. Step 4: Simplify right side
   3,428,448x = 54,359,153,053,956
5. Step 5: Solve for x
   x = 54,359,153,053,956/3,428,448
6. Step 6: Final answer
   x = 15,855,323.77