Finding the Third Proportional to 82,215 and 170,910

Step by Step Solution

1. Step 1: Write the proportion equation
   82,215 : 170,910 = 170,910 : x
2. Step 2: Convert to fraction form
   82,215/170,910 = 170,910/x
3. Step 3: Cross multiply
   82,215x = 170,910 × 170,910
4. Step 4: Simplify right side
   82,215x = 29,210,228,100
5. Step 5: Solve for x
   x = 29,210,228,100/82,215
6. Step 6: Final answer
   x = 355,290.74