Finding the Third Proportional to 105,808 and 170,120

Step by Step Solution

1. Step 1: Write the proportion equation
   105,808 : 170,120 = 170,120 : x
2. Step 2: Convert to fraction form
   105,808/170,120 = 170,120/x
3. Step 3: Cross multiply
   105,808x = 170,120 × 170,120
4. Step 4: Simplify right side
   105,808x = 28,940,814,400
5. Step 5: Solve for x
   x = 28,940,814,400/105,808
6. Step 6: Final answer
   x = 273,521.99