Finding the Third Proportional to 139,828 and 302,984

Step by Step Solution

1. Step 1: Write the proportion equation
   139,828 : 302,984 = 302,984 : x
2. Step 2: Convert to fraction form
   139,828/302,984 = 302,984/x
3. Step 3: Cross multiply
   139,828x = 302,984 × 302,984
4. Step 4: Simplify right side
   139,828x = 91,799,304,256
5. Step 5: Solve for x
   x = 91,799,304,256/139,828
6. Step 6: Final answer
   x = 656,515.89