Finding the Third Proportional to 72,786.75 and 154,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,786.75 : 154,321.50 = 154,321.50 : x
2. Step 2: Convert to fraction form
   72,786.75/154,321.50 = 154,321.50/x
3. Step 3: Cross multiply
   72,786.75x = 154,321.50 × 154,321.50
4. Step 4: Simplify right side
   72,786.75x = 23,815,125,362.25
5. Step 5: Solve for x
   x = 23,815,125,362.25/72,786.75
6. Step 6: Final answer
   x = 327,190.39