Finding the Third Proportional to 171,667 and 265,285.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,667 : 265,285.50 = 265,285.50 : x
2. Step 2: Convert to fraction form
   171,667/265,285.50 = 265,285.50/x
3. Step 3: Cross multiply
   171,667x = 265,285.50 × 265,285.50
4. Step 4: Simplify right side
   171,667x = 70,376,396,510.25
5. Step 5: Solve for x
   x = 70,376,396,510.25/171,667
6. Step 6: Final answer
   x = 409,958.80