Finding the Third Proportional to 864,412 and 2,009,578

Step by Step Solution

1. Step 1: Write the proportion equation
   864,412 : 2,009,578 = 2,009,578 : x
2. Step 2: Convert to fraction form
   864,412/2,009,578 = 2,009,578/x
3. Step 3: Cross multiply
   864,412x = 2,009,578 × 2,009,578
4. Step 4: Simplify right side
   864,412x = 4,038,403,738,084
5. Step 5: Solve for x
   x = 4,038,403,738,084/864,412
6. Step 6: Final answer
   x = 4,671,850.62