Finding the Third Proportional to 139,482 and 256,041

Step by Step Solution

1. Step 1: Write the proportion equation
   139,482 : 256,041 = 256,041 : x
2. Step 2: Convert to fraction form
   139,482/256,041 = 256,041/x
3. Step 3: Cross multiply
   139,482x = 256,041 × 256,041
4. Step 4: Simplify right side
   139,482x = 65,556,993,681
5. Step 5: Solve for x
   x = 65,556,993,681/139,482
6. Step 6: Final answer
   x = 470,003.25