Finding the Third Proportional to 158,470 and 345,370

Step by Step Solution

1. Step 1: Write the proportion equation
   158,470 : 345,370 = 345,370 : x
2. Step 2: Convert to fraction form
   158,470/345,370 = 345,370/x
3. Step 3: Cross multiply
   158,470x = 345,370 × 345,370
4. Step 4: Simplify right side
   158,470x = 119,280,436,900
5. Step 5: Solve for x
   x = 119,280,436,900/158,470
6. Step 6: Final answer
   x = 752,700.43