Finding the Third Proportional to 400,874.06 and 864,406.69

Step by Step Solution

1. Step 1: Write the proportion equation
   400,874.06 : 864,406.69 = 864,406.69 : x
2. Step 2: Convert to fraction form
   400,874.06/864,406.69 = 864,406.69/x
3. Step 3: Cross multiply
   400,874.06x = 864,406.69 × 864,406.69
4. Step 4: Simplify right side
   400,874.06x = 747,198,921,394.72
5. Step 5: Solve for x
   x = 747,198,921,394.72/400,874.06
6. Step 6: Final answer
   x = 1,863,924.34