Finding the Third Proportional to 250,640 and 383,898

Step by Step Solution

1. Step 1: Write the proportion equation
   250,640 : 383,898 = 383,898 : x
2. Step 2: Convert to fraction form
   250,640/383,898 = 383,898/x
3. Step 3: Cross multiply
   250,640x = 383,898 × 383,898
4. Step 4: Simplify right side
   250,640x = 147,377,674,404
5. Step 5: Solve for x
   x = 147,377,674,404/250,640
6. Step 6: Final answer
   x = 588,005.40