Finding the Third Proportional to 64,327.50 and 139,657.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,327.50 : 139,657.50 = 139,657.50 : x
2. Step 2: Convert to fraction form
   64,327.50/139,657.50 = 139,657.50/x
3. Step 3: Cross multiply
   64,327.50x = 139,657.50 × 139,657.50
4. Step 4: Simplify right side
   64,327.50x = 19,504,217,306.25
5. Step 5: Solve for x
   x = 19,504,217,306.25/64,327.50
6. Step 6: Final answer
   x = 303,201.85