Finding the Third Proportional to 123,326 and 255,402

Step by Step Solution

1. Step 1: Write the proportion equation
   123,326 : 255,402 = 255,402 : x
2. Step 2: Convert to fraction form
   123,326/255,402 = 255,402/x
3. Step 3: Cross multiply
   123,326x = 255,402 × 255,402
4. Step 4: Simplify right side
   123,326x = 65,230,181,604
5. Step 5: Solve for x
   x = 65,230,181,604/123,326
6. Step 6: Final answer
   x = 528,924.81