Finding the Third Proportional to 646,671 and 978,953

Step by Step Solution

1. Step 1: Write the proportion equation
   646,671 : 978,953 = 978,953 : x
2. Step 2: Convert to fraction form
   646,671/978,953 = 978,953/x
3. Step 3: Cross multiply
   646,671x = 978,953 × 978,953
4. Step 4: Simplify right side
   646,671x = 958,348,976,209
5. Step 5: Solve for x
   x = 958,348,976,209/646,671
6. Step 6: Final answer
   x = 1,481,973.02