Finding the Third Proportional to 339,601 and 459,562.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,601 : 459,562.50 = 459,562.50 : x
2. Step 2: Convert to fraction form
   339,601/459,562.50 = 459,562.50/x
3. Step 3: Cross multiply
   339,601x = 459,562.50 × 459,562.50
4. Step 4: Simplify right side
   339,601x = 211,197,691,406.25
5. Step 5: Solve for x
   x = 211,197,691,406.25/339,601
6. Step 6: Final answer
   x = 621,899.50