Finding the Third Proportional to 158,240 and 342,616

Step by Step Solution

1. Step 1: Write the proportion equation
   158,240 : 342,616 = 342,616 : x
2. Step 2: Convert to fraction form
   158,240/342,616 = 342,616/x
3. Step 3: Cross multiply
   158,240x = 342,616 × 342,616
4. Step 4: Simplify right side
   158,240x = 117,385,723,456
5. Step 5: Solve for x
   x = 117,385,723,456/158,240
6. Step 6: Final answer
   x = 741,820.80