Finding the Third Proportional to 665,280 and 1,425,816

Step by Step Solution

1. Step 1: Write the proportion equation
   665,280 : 1,425,816 = 1,425,816 : x
2. Step 2: Convert to fraction form
   665,280/1,425,816 = 1,425,816/x
3. Step 3: Cross multiply
   665,280x = 1,425,816 × 1,425,816
4. Step 4: Simplify right side
   665,280x = 2,032,951,265,856
5. Step 5: Solve for x
   x = 2,032,951,265,856/665,280
6. Step 6: Final answer
   x = 3,055,782.93