Finding the Third Proportional to 65,503.50 and 140,345

Step by Step Solution

1. Step 1: Write the proportion equation
   65,503.50 : 140,345 = 140,345 : x
2. Step 2: Convert to fraction form
   65,503.50/140,345 = 140,345/x
3. Step 3: Cross multiply
   65,503.50x = 140,345 × 140,345
4. Step 4: Simplify right side
   65,503.50x = 19,696,719,025
5. Step 5: Solve for x
   x = 19,696,719,025/65,503.50
6. Step 6: Final answer
   x = 300,697.20