Finding the Third Proportional to 68,508.50 and 150,109

Step by Step Solution

1. Step 1: Write the proportion equation
   68,508.50 : 150,109 = 150,109 : x
2. Step 2: Convert to fraction form
   68,508.50/150,109 = 150,109/x
3. Step 3: Cross multiply
   68,508.50x = 150,109 × 150,109
4. Step 4: Simplify right side
   68,508.50x = 22,532,711,881
5. Step 5: Solve for x
   x = 22,532,711,881/68,508.50
6. Step 6: Final answer
   x = 328,903.89