Finding the Third Proportional to 122,647.50 and 264,685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,647.50 : 264,685.50 = 264,685.50 : x
2. Step 2: Convert to fraction form
   122,647.50/264,685.50 = 264,685.50/x
3. Step 3: Cross multiply
   122,647.50x = 264,685.50 × 264,685.50
4. Step 4: Simplify right side
   122,647.50x = 70,058,413,910.25
5. Step 5: Solve for x
   x = 70,058,413,910.25/122,647.50
6. Step 6: Final answer
   x = 571,217.63