Finding the Third Proportional to 904,608 and 1,399,420

Step by Step Solution

1. Step 1: Write the proportion equation
   904,608 : 1,399,420 = 1,399,420 : x
2. Step 2: Convert to fraction form
   904,608/1,399,420 = 1,399,420/x
3. Step 3: Cross multiply
   904,608x = 1,399,420 × 1,399,420
4. Step 4: Simplify right side
   904,608x = 1,958,376,336,400
5. Step 5: Solve for x
   x = 1,958,376,336,400/904,608
6. Step 6: Final answer
   x = 2,164,889.47