Finding the Third Proportional to 3,428,456 and 7,372,880

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428,456 : 7,372,880 = 7,372,880 : x
2. Step 2: Convert to fraction form
   3,428,456/7,372,880 = 7,372,880/x
3. Step 3: Cross multiply
   3,428,456x = 7,372,880 × 7,372,880
4. Step 4: Simplify right side
   3,428,456x = 54,359,359,494,400
5. Step 5: Solve for x
   x = 54,359,359,494,400/3,428,456
6. Step 6: Final answer
   x = 15,855,346.98