Finding the Third Proportional to 56,756 and 123,339

Step by Step Solution

1. Step 1: Write the proportion equation
   56,756 : 123,339 = 123,339 : x
2. Step 2: Convert to fraction form
   56,756/123,339 = 123,339/x
3. Step 3: Cross multiply
   56,756x = 123,339 × 123,339
4. Step 4: Simplify right side
   56,756x = 15,212,508,921
5. Step 5: Solve for x
   x = 15,212,508,921/56,756
6. Step 6: Final answer
   x = 268,033.49