Finding the Third Proportional to 171,757.50 and 259,515

Step by Step Solution

1. Step 1: Write the proportion equation
   171,757.50 : 259,515 = 259,515 : x
2. Step 2: Convert to fraction form
   171,757.50/259,515 = 259,515/x
3. Step 3: Cross multiply
   171,757.50x = 259,515 × 259,515
4. Step 4: Simplify right side
   171,757.50x = 67,348,035,225
5. Step 5: Solve for x
   x = 67,348,035,225/171,757.50
6. Step 6: Final answer
   x = 392,111.18