Finding the Third Proportional to 407,932 and 864,488

Step by Step Solution

1. Step 1: Write the proportion equation
   407,932 : 864,488 = 864,488 : x
2. Step 2: Convert to fraction form
   407,932/864,488 = 864,488/x
3. Step 3: Cross multiply
   407,932x = 864,488 × 864,488
4. Step 4: Simplify right side
   407,932x = 747,339,502,144
5. Step 5: Solve for x
   x = 747,339,502,144/407,932
6. Step 6: Final answer
   x = 1,832,019.80