Finding the Third Proportional to 124,718 and 274,345

Step by Step Solution

1. Step 1: Write the proportion equation
   124,718 : 274,345 = 274,345 : x
2. Step 2: Convert to fraction form
   124,718/274,345 = 274,345/x
3. Step 3: Cross multiply
   124,718x = 274,345 × 274,345
4. Step 4: Simplify right side
   124,718x = 75,265,179,025
5. Step 5: Solve for x
   x = 75,265,179,025/124,718
6. Step 6: Final answer
   x = 603,482.89