Finding the Third Proportional to 1,309,912 and 1,969,728

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309,912 : 1,969,728 = 1,969,728 : x
2. Step 2: Convert to fraction form
   1,309,912/1,969,728 = 1,969,728/x
3. Step 3: Cross multiply
   1,309,912x = 1,969,728 × 1,969,728
4. Step 4: Simplify right side
   1,309,912x = 3,879,828,393,984
5. Step 5: Solve for x
   x = 3,879,828,393,984/1,309,912
6. Step 6: Final answer
   x = 2,961,900.03