Finding the Third Proportional to 538,419 and 844,738.50

Step by Step Solution

1. Step 1: Write the proportion equation
   538,419 : 844,738.50 = 844,738.50 : x
2. Step 2: Convert to fraction form
   538,419/844,738.50 = 844,738.50/x
3. Step 3: Cross multiply
   538,419x = 844,738.50 × 844,738.50
4. Step 4: Simplify right side
   538,419x = 713,583,133,382.25
5. Step 5: Solve for x
   x = 713,583,133,382.25/538,419
6. Step 6: Final answer
   x = 1,325,330.52