Finding the Third Proportional to 455,860 and 978,180

Step by Step Solution

1. Step 1: Write the proportion equation
   455,860 : 978,180 = 978,180 : x
2. Step 2: Convert to fraction form
   455,860/978,180 = 978,180/x
3. Step 3: Cross multiply
   455,860x = 978,180 × 978,180
4. Step 4: Simplify right side
   455,860x = 956,836,112,400
5. Step 5: Solve for x
   x = 956,836,112,400/455,860
6. Step 6: Final answer
   x = 2,098,969.23