Finding the Third Proportional to 453,673 and 978,216

Step by Step Solution

1. Step 1: Write the proportion equation
   453,673 : 978,216 = 978,216 : x
2. Step 2: Convert to fraction form
   453,673/978,216 = 978,216/x
3. Step 3: Cross multiply
   453,673x = 978,216 × 978,216
4. Step 4: Simplify right side
   453,673x = 956,906,542,656
5. Step 5: Solve for x
   x = 956,906,542,656/453,673
6. Step 6: Final answer
   x = 2,109,242.87