Finding the Third Proportional to 158,761 and 343,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,761 : 343,399.50 = 343,399.50 : x
2. Step 2: Convert to fraction form
   158,761/343,399.50 = 343,399.50/x
3. Step 3: Cross multiply
   158,761x = 343,399.50 × 343,399.50
4. Step 4: Simplify right side
   158,761x = 117,923,216,600.25
5. Step 5: Solve for x
   x = 117,923,216,600.25/158,761
6. Step 6: Final answer
   x = 742,771.94