Finding the Third Proportional to 72,224 and 111,612

Step by Step Solution

1. Step 1: Write the proportion equation
   72,224 : 111,612 = 111,612 : x
2. Step 2: Convert to fraction form
   72,224/111,612 = 111,612/x
3. Step 3: Cross multiply
   72,224x = 111,612 × 111,612
4. Step 4: Simplify right side
   72,224x = 12,457,238,544
5. Step 5: Solve for x
   x = 12,457,238,544/72,224
6. Step 6: Final answer
   x = 172,480.60