Finding the Third Proportional to 123,655 and 266,510

Step by Step Solution

1. Step 1: Write the proportion equation
   123,655 : 266,510 = 266,510 : x
2. Step 2: Convert to fraction form
   123,655/266,510 = 266,510/x
3. Step 3: Cross multiply
   123,655x = 266,510 × 266,510
4. Step 4: Simplify right side
   123,655x = 71,027,580,100
5. Step 5: Solve for x
   x = 71,027,580,100/123,655
6. Step 6: Final answer
   x = 574,401.20