Finding the Third Proportional to 453,655 and 978,180

Step by Step Solution

1. Step 1: Write the proportion equation
   453,655 : 978,180 = 978,180 : x
2. Step 2: Convert to fraction form
   453,655/978,180 = 978,180/x
3. Step 3: Cross multiply
   453,655x = 978,180 × 978,180
4. Step 4: Simplify right side
   453,655x = 956,836,112,400
5. Step 5: Solve for x
   x = 956,836,112,400/453,655
6. Step 6: Final answer
   x = 2,109,171.31