Finding the Third Proportional to 67,317 and 105,609

Step by Step Solution

1. Step 1: Write the proportion equation
   67,317 : 105,609 = 105,609 : x
2. Step 2: Convert to fraction form
   67,317/105,609 = 105,609/x
3. Step 3: Cross multiply
   67,317x = 105,609 × 105,609
4. Step 4: Simplify right side
   67,317x = 11,153,260,881
5. Step 5: Solve for x
   x = 11,153,260,881/67,317
6. Step 6: Final answer
   x = 165,682.68