Finding the Third Proportional to 69,542 and 142,389

Step by Step Solution

1. Step 1: Write the proportion equation
   69,542 : 142,389 = 142,389 : x
2. Step 2: Convert to fraction form
   69,542/142,389 = 142,389/x
3. Step 3: Cross multiply
   69,542x = 142,389 × 142,389
4. Step 4: Simplify right side
   69,542x = 20,274,627,321
5. Step 5: Solve for x
   x = 20,274,627,321/69,542
6. Step 6: Final answer
   x = 291,545.07