Finding the Third Proportional to 276,300 and 572,256

Step by Step Solution

1. Step 1: Write the proportion equation
   276,300 : 572,256 = 572,256 : x
2. Step 2: Convert to fraction form
   276,300/572,256 = 572,256/x
3. Step 3: Cross multiply
   276,300x = 572,256 × 572,256
4. Step 4: Simplify right side
   276,300x = 327,476,929,536
5. Step 5: Solve for x
   x = 327,476,929,536/276,300
6. Step 6: Final answer
   x = 1,185,222.33