Finding the Third Proportional to 158,560 and 342,607

Step by Step Solution

1. Step 1: Write the proportion equation
   158,560 : 342,607 = 342,607 : x
2. Step 2: Convert to fraction form
   158,560/342,607 = 342,607/x
3. Step 3: Cross multiply
   158,560x = 342,607 × 342,607
4. Step 4: Simplify right side
   158,560x = 117,379,556,449
5. Step 5: Solve for x
   x = 117,379,556,449/158,560
6. Step 6: Final answer
   x = 740,284.79