Finding the Third Proportional to 250,697 and 383,990

Step by Step Solution

1. Step 1: Write the proportion equation
   250,697 : 383,990 = 383,990 : x
2. Step 2: Convert to fraction form
   250,697/383,990 = 383,990/x
3. Step 3: Cross multiply
   250,697x = 383,990 × 383,990
4. Step 4: Simplify right side
   250,697x = 147,448,320,100
5. Step 5: Solve for x
   x = 147,448,320,100/250,697
6. Step 6: Final answer
   x = 588,153.51