Finding the Third Proportional to 618,067.50 and 1,283,505

Step by Step Solution

1. Step 1: Write the proportion equation
   618,067.50 : 1,283,505 = 1,283,505 : x
2. Step 2: Convert to fraction form
   618,067.50/1,283,505 = 1,283,505/x
3. Step 3: Cross multiply
   618,067.50x = 1,283,505 × 1,283,505
4. Step 4: Simplify right side
   618,067.50x = 1,647,385,085,025
5. Step 5: Solve for x
   x = 1,647,385,085,025/618,067.50
6. Step 6: Final answer
   x = 2,665,380.54