Finding the Third Proportional to 646,681 and 978,967

Step by Step Solution

1. Step 1: Write the proportion equation
   646,681 : 978,967 = 978,967 : x
2. Step 2: Convert to fraction form
   646,681/978,967 = 978,967/x
3. Step 3: Cross multiply
   646,681x = 978,967 × 978,967
4. Step 4: Simplify right side
   646,681x = 958,376,387,089
5. Step 5: Solve for x
   x = 958,376,387,089/646,681
6. Step 6: Final answer
   x = 1,481,992.49