Finding the Third Proportional to 56,564 and 123,388

Step by Step Solution

1. Step 1: Write the proportion equation
   56,564 : 123,388 = 123,388 : x
2. Step 2: Convert to fraction form
   56,564/123,388 = 123,388/x
3. Step 3: Cross multiply
   56,564x = 123,388 × 123,388
4. Step 4: Simplify right side
   56,564x = 15,224,598,544
5. Step 5: Solve for x
   x = 15,224,598,544/56,564
6. Step 6: Final answer
   x = 269,157.04