Finding the Third Proportional to 139,932 and 300,600

Step by Step Solution

1. Step 1: Write the proportion equation
   139,932 : 300,600 = 300,600 : x
2. Step 2: Convert to fraction form
   139,932/300,600 = 300,600/x
3. Step 3: Cross multiply
   139,932x = 300,600 × 300,600
4. Step 4: Simplify right side
   139,932x = 90,360,360,000
5. Step 5: Solve for x
   x = 90,360,360,000/139,932
6. Step 6: Final answer
   x = 645,744.79