Finding the Third Proportional to 1,239,728 and 1,915,695

Step by Step Solution

1. Step 1: Write the proportion equation
   1,239,728 : 1,915,695 = 1,915,695 : x
2. Step 2: Convert to fraction form
   1,239,728/1,915,695 = 1,915,695/x
3. Step 3: Cross multiply
   1,239,728x = 1,915,695 × 1,915,695
4. Step 4: Simplify right side
   1,239,728x = 3,669,887,333,025
5. Step 5: Solve for x
   x = 3,669,887,333,025/1,239,728
6. Step 6: Final answer
   x = 2,960,235.90