Finding the Third Proportional to 139,002 and 305,067.75

Step by Step Solution

1. Step 1: Write the proportion equation
   139,002 : 305,067.75 = 305,067.75 : x
2. Step 2: Convert to fraction form
   139,002/305,067.75 = 305,067.75/x
3. Step 3: Cross multiply
   139,002x = 305,067.75 × 305,067.75
4. Step 4: Simplify right side
   139,002x = 93,066,332,090.06
5. Step 5: Solve for x
   x = 93,066,332,090.06/139,002
6. Step 6: Final answer
   x = 669,532.32