Finding the Third Proportional to 498,474 and 753,644.25

Step by Step Solution

1. Step 1: Write the proportion equation
   498,474 : 753,644.25 = 753,644.25 : x
2. Step 2: Convert to fraction form
   498,474/753,644.25 = 753,644.25/x
3. Step 3: Cross multiply
   498,474x = 753,644.25 × 753,644.25
4. Step 4: Simplify right side
   498,474x = 567,979,655,558.06
5. Step 5: Solve for x
   x = 567,979,655,558.06/498,474
6. Step 6: Final answer
   x = 1,139,436.87