Finding the Third Proportional to 80,870 and 170,118

Step by Step Solution

1. Step 1: Write the proportion equation
   80,870 : 170,118 = 170,118 : x
2. Step 2: Convert to fraction form
   80,870/170,118 = 170,118/x
3. Step 3: Cross multiply
   80,870x = 170,118 × 170,118
4. Step 4: Simplify right side
   80,870x = 28,940,133,924
5. Step 5: Solve for x
   x = 28,940,133,924/80,870
6. Step 6: Final answer
   x = 357,859.95