Finding the Third Proportional to 123,155 and 264,728

Step by Step Solution

1. Step 1: Write the proportion equation
   123,155 : 264,728 = 264,728 : x
2. Step 2: Convert to fraction form
   123,155/264,728 = 264,728/x
3. Step 3: Cross multiply
   123,155x = 264,728 × 264,728
4. Step 4: Simplify right side
   123,155x = 70,080,913,984
5. Step 5: Solve for x
   x = 70,080,913,984/123,155
6. Step 6: Final answer
   x = 569,046.44