Finding the Third Proportional to 66,665.50 and 140,825

Step by Step Solution

1. Step 1: Write the proportion equation
   66,665.50 : 140,825 = 140,825 : x
2. Step 2: Convert to fraction form
   66,665.50/140,825 = 140,825/x
3. Step 3: Cross multiply
   66,665.50x = 140,825 × 140,825
4. Step 4: Simplify right side
   66,665.50x = 19,831,680,625
5. Step 5: Solve for x
   x = 19,831,680,625/66,665.50
6. Step 6: Final answer
   x = 297,480.42