Finding the Third Proportional to 17,289 and 35,212.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,289 : 35,212.50 = 35,212.50 : x
2. Step 2: Convert to fraction form
   17,289/35,212.50 = 35,212.50/x
3. Step 3: Cross multiply
   17,289x = 35,212.50 × 35,212.50
4. Step 4: Simplify right side
   17,289x = 1,239,920,156.25
5. Step 5: Solve for x
   x = 1,239,920,156.25/17,289
6. Step 6: Final answer
   x = 71,717.29