Finding the Third Proportional to 287,114.63 and 618,105.38

Step by Step Solution

1. Step 1: Write the proportion equation
   287,114.63 : 618,105.38 = 618,105.38 : x
2. Step 2: Convert to fraction form
   287,114.63/618,105.38 = 618,105.38/x
3. Step 3: Cross multiply
   287,114.63x = 618,105.38 × 618,105.38
4. Step 4: Simplify right side
   287,114.63x = 382,054,254,603.89
5. Step 5: Solve for x
   x = 382,054,254,603.89/287,114.63
6. Step 6: Final answer
   x = 1,330,668.04