Finding the Third Proportional to 646,504 and 978,754

Step by Step Solution

1. Step 1: Write the proportion equation
   646,504 : 978,754 = 978,754 : x
2. Step 2: Convert to fraction form
   646,504/978,754 = 978,754/x
3. Step 3: Cross multiply
   646,504x = 978,754 × 978,754
4. Step 4: Simplify right side
   646,504x = 957,959,392,516
5. Step 5: Solve for x
   x = 957,959,392,516/646,504
6. Step 6: Final answer
   x = 1,481,753.23