Finding the Third Proportional to 167,878.50 and 260,328

Step by Step Solution

1. Step 1: Write the proportion equation
   167,878.50 : 260,328 = 260,328 : x
2. Step 2: Convert to fraction form
   167,878.50/260,328 = 260,328/x
3. Step 3: Cross multiply
   167,878.50x = 260,328 × 260,328
4. Step 4: Simplify right side
   167,878.50x = 67,770,667,584
5. Step 5: Solve for x
   x = 67,770,667,584/167,878.50
6. Step 6: Final answer
   x = 403,688.78