Finding the Third Proportional to 151,292 and 322,456

Step by Step Solution

1. Step 1: Write the proportion equation
   151,292 : 322,456 = 322,456 : x
2. Step 2: Convert to fraction form
   151,292/322,456 = 322,456/x
3. Step 3: Cross multiply
   151,292x = 322,456 × 322,456
4. Step 4: Simplify right side
   151,292x = 103,977,871,936
5. Step 5: Solve for x
   x = 103,977,871,936/151,292
6. Step 6: Final answer
   x = 687,266.16