Finding the Third Proportional to 80,856 and 170,090

Step by Step Solution

1. Step 1: Write the proportion equation
   80,856 : 170,090 = 170,090 : x
2. Step 2: Convert to fraction form
   80,856/170,090 = 170,090/x
3. Step 3: Cross multiply
   80,856x = 170,090 × 170,090
4. Step 4: Simplify right side
   80,856x = 28,930,608,100
5. Step 5: Solve for x
   x = 28,930,608,100/80,856
6. Step 6: Final answer
   x = 357,804.10