Finding the Third Proportional to 67,700 and 105,870

Step by Step Solution

1. Step 1: Write the proportion equation
   67,700 : 105,870 = 105,870 : x
2. Step 2: Convert to fraction form
   67,700/105,870 = 105,870/x
3. Step 3: Cross multiply
   67,700x = 105,870 × 105,870
4. Step 4: Simplify right side
   67,700x = 11,208,456,900
5. Step 5: Solve for x
   x = 11,208,456,900/67,700
6. Step 6: Final answer
   x = 165,560.66