Finding the Third Proportional to 743,658 and 1,605,388

Step by Step Solution

1. Step 1: Write the proportion equation
   743,658 : 1,605,388 = 1,605,388 : x
2. Step 2: Convert to fraction form
   743,658/1,605,388 = 1,605,388/x
3. Step 3: Cross multiply
   743,658x = 1,605,388 × 1,605,388
4. Step 4: Simplify right side
   743,658x = 2,577,270,630,544
5. Step 5: Solve for x
   x = 2,577,270,630,544/743,658
6. Step 6: Final answer
   x = 3,465,666.52