Finding the Third Proportional to 56,574 and 111,720

Step by Step Solution

1. Step 1: Write the proportion equation
   56,574 : 111,720 = 111,720 : x
2. Step 2: Convert to fraction form
   56,574/111,720 = 111,720/x
3. Step 3: Cross multiply
   56,574x = 111,720 × 111,720
4. Step 4: Simplify right side
   56,574x = 12,481,358,400
5. Step 5: Solve for x
   x = 12,481,358,400/56,574
6. Step 6: Final answer
   x = 220,620.04