Finding the Third Proportional to 693,990 and 1,068,049

Step by Step Solution

1. Step 1: Write the proportion equation
   693,990 : 1,068,049 = 1,068,049 : x
2. Step 2: Convert to fraction form
   693,990/1,068,049 = 1,068,049/x
3. Step 3: Cross multiply
   693,990x = 1,068,049 × 1,068,049
4. Step 4: Simplify right side
   693,990x = 1,140,728,666,401
5. Step 5: Solve for x
   x = 1,140,728,666,401/693,990
6. Step 6: Final answer
   x = 1,643,724.93