Finding the Third Proportional to 64,517.50 and 139,241

Step by Step Solution

1. Step 1: Write the proportion equation
   64,517.50 : 139,241 = 139,241 : x
2. Step 2: Convert to fraction form
   64,517.50/139,241 = 139,241/x
3. Step 3: Cross multiply
   64,517.50x = 139,241 × 139,241
4. Step 4: Simplify right side
   64,517.50x = 19,388,056,081
5. Step 5: Solve for x
   x = 19,388,056,081/64,517.50
6. Step 6: Final answer
   x = 300,508.48