Finding the Third Proportional to 139,158 and 300,483

Step by Step Solution

1. Step 1: Write the proportion equation
   139,158 : 300,483 = 300,483 : x
2. Step 2: Convert to fraction form
   139,158/300,483 = 300,483/x
3. Step 3: Cross multiply
   139,158x = 300,483 × 300,483
4. Step 4: Simplify right side
   139,158x = 90,290,033,289
5. Step 5: Solve for x
   x = 90,290,033,289/139,158
6. Step 6: Final answer
   x = 648,831.06