Finding the Third Proportional to 69,377.50 and 143,678

Step by Step Solution

1. Step 1: Write the proportion equation
   69,377.50 : 143,678 = 143,678 : x
2. Step 2: Convert to fraction form
   69,377.50/143,678 = 143,678/x
3. Step 3: Cross multiply
   69,377.50x = 143,678 × 143,678
4. Step 4: Simplify right side
   69,377.50x = 20,643,367,684
5. Step 5: Solve for x
   x = 20,643,367,684/69,377.50
6. Step 6: Final answer
   x = 297,551.33