Finding the Third Proportional to 158,486 and 345,404

Step by Step Solution

1. Step 1: Write the proportion equation
   158,486 : 345,404 = 345,404 : x
2. Step 2: Convert to fraction form
   158,486/345,404 = 345,404/x
3. Step 3: Cross multiply
   158,486x = 345,404 × 345,404
4. Step 4: Simplify right side
   158,486x = 119,303,923,216
5. Step 5: Solve for x
   x = 119,303,923,216/158,486
6. Step 6: Final answer
   x = 752,772.63