Finding the Third Proportional to 70,687 and 109,310

Step by Step Solution

1. Step 1: Write the proportion equation
   70,687 : 109,310 = 109,310 : x
2. Step 2: Convert to fraction form
   70,687/109,310 = 109,310/x
3. Step 3: Cross multiply
   70,687x = 109,310 × 109,310
4. Step 4: Simplify right side
   70,687x = 11,948,676,100
5. Step 5: Solve for x
   x = 11,948,676,100/70,687
6. Step 6: Final answer
   x = 169,036.40