Finding the Third Proportional to 520,128 and 978,048

Step by Step Solution

1. Step 1: Write the proportion equation
   520,128 : 978,048 = 978,048 : x
2. Step 2: Convert to fraction form
   520,128/978,048 = 978,048/x
3. Step 3: Cross multiply
   520,128x = 978,048 × 978,048
4. Step 4: Simplify right side
   520,128x = 956,577,890,304
5. Step 5: Solve for x
   x = 956,577,890,304/520,128
6. Step 6: Final answer
   x = 1,839,120.16