Finding the Third Proportional to 669,686 and 1,404,760

Step by Step Solution

1. Step 1: Write the proportion equation
   669,686 : 1,404,760 = 1,404,760 : x
2. Step 2: Convert to fraction form
   669,686/1,404,760 = 1,404,760/x
3. Step 3: Cross multiply
   669,686x = 1,404,760 × 1,404,760
4. Step 4: Simplify right side
   669,686x = 1,973,350,657,600
5. Step 5: Solve for x
   x = 1,973,350,657,600/669,686
6. Step 6: Final answer
   x = 2,946,680.47