Finding the Third Proportional to 64,484 and 144,839.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,484 : 144,839.50 = 144,839.50 : x
2. Step 2: Convert to fraction form
   64,484/144,839.50 = 144,839.50/x
3. Step 3: Cross multiply
   64,484x = 144,839.50 × 144,839.50
4. Step 4: Simplify right side
   64,484x = 20,978,480,760.25
5. Step 5: Solve for x
   x = 20,978,480,760.25/64,484
6. Step 6: Final answer
   x = 325,328.47