Finding the Third Proportional to 139,084 and 300,338

Step by Step Solution

1. Step 1: Write the proportion equation
   139,084 : 300,338 = 300,338 : x
2. Step 2: Convert to fraction form
   139,084/300,338 = 300,338/x
3. Step 3: Cross multiply
   139,084x = 300,338 × 300,338
4. Step 4: Simplify right side
   139,084x = 90,202,914,244
5. Step 5: Solve for x
   x = 90,202,914,244/139,084
6. Step 6: Final answer
   x = 648,549.90