Finding the Third Proportional to 67,059 and 139,629

Step by Step Solution

1. Step 1: Write the proportion equation
   67,059 : 139,629 = 139,629 : x
2. Step 2: Convert to fraction form
   67,059/139,629 = 139,629/x
3. Step 3: Cross multiply
   67,059x = 139,629 × 139,629
4. Step 4: Simplify right side
   67,059x = 19,496,257,641
5. Step 5: Solve for x
   x = 19,496,257,641/67,059
6. Step 6: Final answer
   x = 290,732.90