Finding the Third Proportional to 154,857 and 328,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,857 : 328,321.50 = 328,321.50 : x
2. Step 2: Convert to fraction form
   154,857/328,321.50 = 328,321.50/x
3. Step 3: Cross multiply
   154,857x = 328,321.50 × 328,321.50
4. Step 4: Simplify right side
   154,857x = 107,795,007,362.25
5. Step 5: Solve for x
   x = 107,795,007,362.25/154,857
6. Step 6: Final answer
   x = 696,093.86