Finding the Third Proportional to 144,647 and 216,828.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,647 : 216,828.50 = 216,828.50 : x
2. Step 2: Convert to fraction form
   144,647/216,828.50 = 216,828.50/x
3. Step 3: Cross multiply
   144,647x = 216,828.50 × 216,828.50
4. Step 4: Simplify right side
   144,647x = 47,014,598,412.25
5. Step 5: Solve for x
   x = 47,014,598,412.25/144,647
6. Step 6: Final answer
   x = 325,029.89