Finding the Third Proportional to 146,599.50 and 320,190

Step by Step Solution

1. Step 1: Write the proportion equation
   146,599.50 : 320,190 = 320,190 : x
2. Step 2: Convert to fraction form
   146,599.50/320,190 = 320,190/x
3. Step 3: Cross multiply
   146,599.50x = 320,190 × 320,190
4. Step 4: Simplify right side
   146,599.50x = 102,521,636,100
5. Step 5: Solve for x
   x = 102,521,636,100/146,599.50
6. Step 6: Final answer
   x = 699,331.42