Finding the Third Proportional to 123,320 and 265,356

Step by Step Solution

1. Step 1: Write the proportion equation
   123,320 : 265,356 = 265,356 : x
2. Step 2: Convert to fraction form
   123,320/265,356 = 265,356/x
3. Step 3: Cross multiply
   123,320x = 265,356 × 265,356
4. Step 4: Simplify right side
   123,320x = 70,413,806,736
5. Step 5: Solve for x
   x = 70,413,806,736/123,320
6. Step 6: Final answer
   x = 570,984.49