Finding the Third Proportional to 669,658 and 1,405,650

Step by Step Solution

1. Step 1: Write the proportion equation
   669,658 : 1,405,650 = 1,405,650 : x
2. Step 2: Convert to fraction form
   669,658/1,405,650 = 1,405,650/x
3. Step 3: Cross multiply
   669,658x = 1,405,650 × 1,405,650
4. Step 4: Simplify right side
   669,658x = 1,975,851,922,500
5. Step 5: Solve for x
   x = 1,975,851,922,500/669,658
6. Step 6: Final answer
   x = 2,950,538.82