Finding the Third Proportional to 146,419.50 and 320,855.50

Step by Step Solution

1. Step 1: Write the proportion equation
   146,419.50 : 320,855.50 = 320,855.50 : x
2. Step 2: Convert to fraction form
   146,419.50/320,855.50 = 320,855.50/x
3. Step 3: Cross multiply
   146,419.50x = 320,855.50 × 320,855.50
4. Step 4: Simplify right side
   146,419.50x = 102,948,251,880.25
5. Step 5: Solve for x
   x = 102,948,251,880.25/146,419.50
6. Step 6: Final answer
   x = 703,104.79