Finding the Third Proportional to 143,549 and 220,345.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,549 : 220,345.50 = 220,345.50 : x
2. Step 2: Convert to fraction form
   143,549/220,345.50 = 220,345.50/x
3. Step 3: Cross multiply
   143,549x = 220,345.50 × 220,345.50
4. Step 4: Simplify right side
   143,549x = 48,552,139,370.25
5. Step 5: Solve for x
   x = 48,552,139,370.25/143,549
6. Step 6: Final answer
   x = 338,226.94