Finding the Third Proportional to 3,465,774 and 7,728,440

Step by Step Solution

1. Step 1: Write the proportion equation
   3,465,774 : 7,728,440 = 7,728,440 : x
2. Step 2: Convert to fraction form
   3,465,774/7,728,440 = 7,728,440/x
3. Step 3: Cross multiply
   3,465,774x = 7,728,440 × 7,728,440
4. Step 4: Simplify right side
   3,465,774x = 59,728,784,833,600
5. Step 5: Solve for x
   x = 59,728,784,833,600/3,465,774
6. Step 6: Final answer
   x = 17,233,894.89