Finding the Third Proportional to 453,658 and 978,186

Step by Step Solution

1. Step 1: Write the proportion equation
   453,658 : 978,186 = 978,186 : x
2. Step 2: Convert to fraction form
   453,658/978,186 = 978,186/x
3. Step 3: Cross multiply
   453,658x = 978,186 × 978,186
4. Step 4: Simplify right side
   453,658x = 956,847,850,596
5. Step 5: Solve for x
   x = 956,847,850,596/453,658
6. Step 6: Final answer
   x = 2,109,183.24