Finding the Third Proportional to 123,720 and 264,936

Step by Step Solution

1. Step 1: Write the proportion equation
   123,720 : 264,936 = 264,936 : x
2. Step 2: Convert to fraction form
   123,720/264,936 = 264,936/x
3. Step 3: Cross multiply
   123,720x = 264,936 × 264,936
4. Step 4: Simplify right side
   123,720x = 70,191,084,096
5. Step 5: Solve for x
   x = 70,191,084,096/123,720
6. Step 6: Final answer
   x = 567,338.22