Finding the Third Proportional to 70,686 and 109,917

Step by Step Solution

1. Step 1: Write the proportion equation
   70,686 : 109,917 = 109,917 : x
2. Step 2: Convert to fraction form
   70,686/109,917 = 109,917/x
3. Step 3: Cross multiply
   70,686x = 109,917 × 109,917
4. Step 4: Simplify right side
   70,686x = 12,081,746,889
5. Step 5: Solve for x
   x = 12,081,746,889/70,686
6. Step 6: Final answer
   x = 170,921.35