Finding the Third Proportional to 407,647.69 and 864,624.38

Step by Step Solution

1. Step 1: Write the proportion equation
   407,647.69 : 864,624.38 = 864,624.38 : x
2. Step 2: Convert to fraction form
   407,647.69/864,624.38 = 864,624.38/x
3. Step 3: Cross multiply
   407,647.69x = 864,624.38 × 864,624.38
4. Step 4: Simplify right side
   407,647.69x = 747,575,309,844.14
5. Step 5: Solve for x
   x = 747,575,309,844.14/407,647.69
6. Step 6: Final answer
   x = 1,833,876.00