Finding the Third Proportional to 143,049 and 221,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,049 : 221,620.50 = 221,620.50 : x
2. Step 2: Convert to fraction form
   143,049/221,620.50 = 221,620.50/x
3. Step 3: Cross multiply
   143,049x = 221,620.50 × 221,620.50
4. Step 4: Simplify right side
   143,049x = 49,115,646,020.25
5. Step 5: Solve for x
   x = 49,115,646,020.25/143,049
6. Step 6: Final answer
   x = 343,348.41