Finding the Third Proportional to 17,290 and 35,215

Step by Step Solution

1. Step 1: Write the proportion equation
   17,290 : 35,215 = 35,215 : x
2. Step 2: Convert to fraction form
   17,290/35,215 = 35,215/x
3. Step 3: Cross multiply
   17,290x = 35,215 × 35,215
4. Step 4: Simplify right side
   17,290x = 1,240,096,225
5. Step 5: Solve for x
   x = 1,240,096,225/17,290
6. Step 6: Final answer
   x = 71,723.32