Finding the Third Proportional to 505,348 and 757,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   505,348 : 757,243.50 = 757,243.50 : x
2. Step 2: Convert to fraction form
   505,348/757,243.50 = 757,243.50/x
3. Step 3: Cross multiply
   505,348x = 757,243.50 × 757,243.50
4. Step 4: Simplify right side
   505,348x = 573,417,718,292.25
5. Step 5: Solve for x
   x = 573,417,718,292.25/505,348
6. Step 6: Final answer
   x = 1,134,698.70