Finding the Third Proportional to 650,890 and 978,218

Step by Step Solution

1. Step 1: Write the proportion equation
   650,890 : 978,218 = 978,218 : x
2. Step 2: Convert to fraction form
   650,890/978,218 = 978,218/x
3. Step 3: Cross multiply
   650,890x = 978,218 × 978,218
4. Step 4: Simplify right side
   650,890x = 956,910,455,524
5. Step 5: Solve for x
   x = 956,910,455,524/650,890
6. Step 6: Final answer
   x = 1,470,156.95