Finding the Third Proportional to 69,089.25 and 143,371.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,089.25 : 143,371.50 = 143,371.50 : x
2. Step 2: Convert to fraction form
   69,089.25/143,371.50 = 143,371.50/x
3. Step 3: Cross multiply
   69,089.25x = 143,371.50 × 143,371.50
4. Step 4: Simplify right side
   69,089.25x = 20,555,387,012.25
5. Step 5: Solve for x
   x = 20,555,387,012.25/69,089.25
6. Step 6: Final answer
   x = 297,519.32