Finding the Third Proportional to 67,320 and 105,612

Step by Step Solution

1. Step 1: Write the proportion equation
   67,320 : 105,612 = 105,612 : x
2. Step 2: Convert to fraction form
   67,320/105,612 = 105,612/x
3. Step 3: Cross multiply
   67,320x = 105,612 × 105,612
4. Step 4: Simplify right side
   67,320x = 11,153,894,544
5. Step 5: Solve for x
   x = 11,153,894,544/67,320
6. Step 6: Final answer
   x = 165,684.71