Finding the Third Proportional to 122,608.50 and 264,000

Step by Step Solution

1. Step 1: Write the proportion equation
   122,608.50 : 264,000 = 264,000 : x
2. Step 2: Convert to fraction form
   122,608.50/264,000 = 264,000/x
3. Step 3: Cross multiply
   122,608.50x = 264,000 × 264,000
4. Step 4: Simplify right side
   122,608.50x = 69,696,000,000
5. Step 5: Solve for x
   x = 69,696,000,000/122,608.50
6. Step 6: Final answer
   x = 568,443.46