Finding the Third Proportional to 69,490 and 143,744

Step by Step Solution

1. Step 1: Write the proportion equation
   69,490 : 143,744 = 143,744 : x
2. Step 2: Convert to fraction form
   69,490/143,744 = 143,744/x
3. Step 3: Cross multiply
   69,490x = 143,744 × 143,744
4. Step 4: Simplify right side
   69,490x = 20,662,337,536
5. Step 5: Solve for x
   x = 20,662,337,536/69,490
6. Step 6: Final answer
   x = 297,342.60