Finding the Third Proportional to 665,280 and 1,042,426

Step by Step Solution

1. Step 1: Write the proportion equation
   665,280 : 1,042,426 = 1,042,426 : x
2. Step 2: Convert to fraction form
   665,280/1,042,426 = 1,042,426/x
3. Step 3: Cross multiply
   665,280x = 1,042,426 × 1,042,426
4. Step 4: Simplify right side
   665,280x = 1,086,651,965,476
5. Step 5: Solve for x
   x = 1,086,651,965,476/665,280
6. Step 6: Final answer
   x = 1,633,375.37