Finding the Third Proportional to 59,290 and 139,956

Step by Step Solution

1. Step 1: Write the proportion equation
   59,290 : 139,956 = 139,956 : x
2. Step 2: Convert to fraction form
   59,290/139,956 = 139,956/x
3. Step 3: Cross multiply
   59,290x = 139,956 × 139,956
4. Step 4: Simplify right side
   59,290x = 19,587,681,936
5. Step 5: Solve for x
   x = 19,587,681,936/59,290
6. Step 6: Final answer
   x = 330,370.75