Finding the Third Proportional to 3,465,772 and 7,728,438

Step by Step Solution

1. Step 1: Write the proportion equation
   3,465,772 : 7,728,438 = 7,728,438 : x
2. Step 2: Convert to fraction form
   3,465,772/7,728,438 = 7,728,438/x
3. Step 3: Cross multiply
   3,465,772x = 7,728,438 × 7,728,438
4. Step 4: Simplify right side
   3,465,772x = 59,728,753,919,844
5. Step 5: Solve for x
   x = 59,728,753,919,844/3,465,772
6. Step 6: Final answer
   x = 17,233,895.92