Finding the Third Proportional to 69,488 and 143,740

Step by Step Solution

1. Step 1: Write the proportion equation
   69,488 : 143,740 = 143,740 : x
2. Step 2: Convert to fraction form
   69,488/143,740 = 143,740/x
3. Step 3: Cross multiply
   69,488x = 143,740 × 143,740
4. Step 4: Simplify right side
   69,488x = 20,661,187,600
5. Step 5: Solve for x
   x = 20,661,187,600/69,488
6. Step 6: Final answer
   x = 297,334.61