Finding the Third Proportional to 56,945.53 and 123,721.17

Step by Step Solution

1. Step 1: Write the proportion equation
   56,945.53 : 123,721.17 = 123,721.17 : x
2. Step 2: Convert to fraction form
   56,945.53/123,721.17 = 123,721.17/x
3. Step 3: Cross multiply
   56,945.53x = 123,721.17 × 123,721.17
4. Step 4: Simplify right side
   56,945.53x = 15,306,928,370.12
5. Step 5: Solve for x
   x = 15,306,928,370.12/56,945.53
6. Step 6: Final answer
   x = 268,799.47