Finding the Third Proportional to 169,239 and 360,211.50

Step by Step Solution

1. Step 1: Write the proportion equation
   169,239 : 360,211.50 = 360,211.50 : x
2. Step 2: Convert to fraction form
   169,239/360,211.50 = 360,211.50/x
3. Step 3: Cross multiply
   169,239x = 360,211.50 × 360,211.50
4. Step 4: Simplify right side
   169,239x = 129,752,324,732.25
5. Step 5: Solve for x
   x = 129,752,324,732.25/169,239
6. Step 6: Final answer
   x = 766,680.99