Finding the Third Proportional to 426,190.50 and 647,062

Step by Step Solution

1. Step 1: Write the proportion equation
   426,190.50 : 647,062 = 647,062 : x
2. Step 2: Convert to fraction form
   426,190.50/647,062 = 647,062/x
3. Step 3: Cross multiply
   426,190.50x = 647,062 × 647,062
4. Step 4: Simplify right side
   426,190.50x = 418,689,231,844
5. Step 5: Solve for x
   x = 418,689,231,844/426,190.50
6. Step 6: Final answer
   x = 982,399.26