Finding the Third Proportional to 56,120 and 123,356

Step by Step Solution

1. Step 1: Write the proportion equation
   56,120 : 123,356 = 123,356 : x
2. Step 2: Convert to fraction form
   56,120/123,356 = 123,356/x
3. Step 3: Cross multiply
   56,120x = 123,356 × 123,356
4. Step 4: Simplify right side
   56,120x = 15,216,702,736
5. Step 5: Solve for x
   x = 15,216,702,736/56,120
6. Step 6: Final answer
   x = 271,145.81