Finding the Third Proportional to 261,317 and 572,456

Step by Step Solution

1. Step 1: Write the proportion equation
   261,317 : 572,456 = 572,456 : x
2. Step 2: Convert to fraction form
   261,317/572,456 = 572,456/x
3. Step 3: Cross multiply
   261,317x = 572,456 × 572,456
4. Step 4: Simplify right side
   261,317x = 327,705,871,936
5. Step 5: Solve for x
   x = 327,705,871,936/261,317
6. Step 6: Final answer
   x = 1,254,054.93