Finding the Third Proportional to 400,077 and 872,055

Step by Step Solution

1. Step 1: Write the proportion equation
   400,077 : 872,055 = 872,055 : x
2. Step 2: Convert to fraction form
   400,077/872,055 = 872,055/x
3. Step 3: Cross multiply
   400,077x = 872,055 × 872,055
4. Step 4: Simplify right side
   400,077x = 760,479,923,025
5. Step 5: Solve for x
   x = 760,479,923,025/400,077
6. Step 6: Final answer
   x = 1,900,833.90