Finding the Third Proportional to 64,434 and 139,936

Step by Step Solution

1. Step 1: Write the proportion equation
   64,434 : 139,936 = 139,936 : x
2. Step 2: Convert to fraction form
   64,434/139,936 = 139,936/x
3. Step 3: Cross multiply
   64,434x = 139,936 × 139,936
4. Step 4: Simplify right side
   64,434x = 19,582,084,096
5. Step 5: Solve for x
   x = 19,582,084,096/64,434
6. Step 6: Final answer
   x = 303,909.18