Finding the Third Proportional to 56,448 and 123,392

Step by Step Solution

1. Step 1: Write the proportion equation
   56,448 : 123,392 = 123,392 : x
2. Step 2: Convert to fraction form
   56,448/123,392 = 123,392/x
3. Step 3: Cross multiply
   56,448x = 123,392 × 123,392
4. Step 4: Simplify right side
   56,448x = 15,225,585,664
5. Step 5: Solve for x
   x = 15,225,585,664/56,448
6. Step 6: Final answer
   x = 269,727.64