Finding the Third Proportional to 64,279 and 139,614.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,279 : 139,614.50 = 139,614.50 : x
2. Step 2: Convert to fraction form
   64,279/139,614.50 = 139,614.50/x
3. Step 3: Cross multiply
   64,279x = 139,614.50 × 139,614.50
4. Step 4: Simplify right side
   64,279x = 19,492,208,610.25
5. Step 5: Solve for x
   x = 19,492,208,610.25/64,279
6. Step 6: Final answer
   x = 303,243.81