Finding the Third Proportional to 60,328.50 and 128,667

Step by Step Solution

1. Step 1: Write the proportion equation
   60,328.50 : 128,667 = 128,667 : x
2. Step 2: Convert to fraction form
   60,328.50/128,667 = 128,667/x
3. Step 3: Cross multiply
   60,328.50x = 128,667 × 128,667
4. Step 4: Simplify right side
   60,328.50x = 16,555,196,889
5. Step 5: Solve for x
   x = 16,555,196,889/60,328.50
6. Step 6: Final answer
   x = 274,417.51