Finding the Third Proportional to 76,709.50 and 158,744.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,709.50 : 158,744.50 = 158,744.50 : x
2. Step 2: Convert to fraction form
   76,709.50/158,744.50 = 158,744.50/x
3. Step 3: Cross multiply
   76,709.50x = 158,744.50 × 158,744.50
4. Step 4: Simplify right side
   76,709.50x = 25,199,816,280.25
5. Step 5: Solve for x
   x = 25,199,816,280.25/76,709.50
6. Step 6: Final answer
   x = 328,509.72