Finding the Third Proportional to 646,670 and 978,952

Step by Step Solution

1. Step 1: Write the proportion equation
   646,670 : 978,952 = 978,952 : x
2. Step 2: Convert to fraction form
   646,670/978,952 = 978,952/x
3. Step 3: Cross multiply
   646,670x = 978,952 × 978,952
4. Step 4: Simplify right side
   646,670x = 958,347,018,304
5. Step 5: Solve for x
   x = 958,347,018,304/646,670
6. Step 6: Final answer
   x = 1,481,972.29