Finding the Third Proportional to 356,592 and 783,456

Step by Step Solution

1. Step 1: Write the proportion equation
   356,592 : 783,456 = 783,456 : x
2. Step 2: Convert to fraction form
   356,592/783,456 = 783,456/x
3. Step 3: Cross multiply
   356,592x = 783,456 × 783,456
4. Step 4: Simplify right side
   356,592x = 613,803,303,936
5. Step 5: Solve for x
   x = 613,803,303,936/356,592
6. Step 6: Final answer
   x = 1,721,304.19