Finding the Third Proportional to 124,728 and 274,368.75

Step by Step Solution

1. Step 1: Write the proportion equation
   124,728 : 274,368.75 = 274,368.75 : x
2. Step 2: Convert to fraction form
   124,728/274,368.75 = 274,368.75/x
3. Step 3: Cross multiply
   124,728x = 274,368.75 × 274,368.75
4. Step 4: Simplify right side
   124,728x = 75,278,210,976.56
5. Step 5: Solve for x
   x = 75,278,210,976.56/124,728
6. Step 6: Final answer
   x = 603,538.99