Finding the Third Proportional to 284,939 and 442,950.50

Step by Step Solution

1. Step 1: Write the proportion equation
   284,939 : 442,950.50 = 442,950.50 : x
2. Step 2: Convert to fraction form
   284,939/442,950.50 = 442,950.50/x
3. Step 3: Cross multiply
   284,939x = 442,950.50 × 442,950.50
4. Step 4: Simplify right side
   284,939x = 196,205,145,450.25
5. Step 5: Solve for x
   x = 196,205,145,450.25/284,939
6. Step 6: Final answer
   x = 688,586.49