Finding the Third Proportional to 69,972 and 105,540

Step by Step Solution

1. Step 1: Write the proportion equation
   69,972 : 105,540 = 105,540 : x
2. Step 2: Convert to fraction form
   69,972/105,540 = 105,540/x
3. Step 3: Cross multiply
   69,972x = 105,540 × 105,540
4. Step 4: Simplify right side
   69,972x = 11,138,691,600
5. Step 5: Solve for x
   x = 11,138,691,600/69,972
6. Step 6: Final answer
   x = 159,187.84