Finding the Third Proportional to 123,368 and 265,446

Step by Step Solution

1. Step 1: Write the proportion equation
   123,368 : 265,446 = 265,446 : x
2. Step 2: Convert to fraction form
   123,368/265,446 = 265,446/x
3. Step 3: Cross multiply
   123,368x = 265,446 × 265,446
4. Step 4: Simplify right side
   123,368x = 70,461,578,916
5. Step 5: Solve for x
   x = 70,461,578,916/123,368
6. Step 6: Final answer
   x = 571,149.56