Finding the Third Proportional to 67,387 and 105,705

Step by Step Solution

1. Step 1: Write the proportion equation
   67,387 : 105,705 = 105,705 : x
2. Step 2: Convert to fraction form
   67,387/105,705 = 105,705/x
3. Step 3: Cross multiply
   67,387x = 105,705 × 105,705
4. Step 4: Simplify right side
   67,387x = 11,173,547,025
5. Step 5: Solve for x
   x = 11,173,547,025/67,387
6. Step 6: Final answer
   x = 165,811.61