Finding the Third Proportional to 122,487 and 262,469.25

Step by Step Solution

1. Step 1: Write the proportion equation
   122,487 : 262,469.25 = 262,469.25 : x
2. Step 2: Convert to fraction form
   122,487/262,469.25 = 262,469.25/x
3. Step 3: Cross multiply
   122,487x = 262,469.25 × 262,469.25
4. Step 4: Simplify right side
   122,487x = 68,890,107,195.56
5. Step 5: Solve for x
   x = 68,890,107,195.56/122,487
6. Step 6: Final answer
   x = 562,427.91