Finding the Third Proportional to 643,903 and 1,019,367

Step by Step Solution

1. Step 1: Write the proportion equation
   643,903 : 1,019,367 = 1,019,367 : x
2. Step 2: Convert to fraction form
   643,903/1,019,367 = 1,019,367/x
3. Step 3: Cross multiply
   643,903x = 1,019,367 × 1,019,367
4. Step 4: Simplify right side
   643,903x = 1,039,109,080,689
5. Step 5: Solve for x
   x = 1,039,109,080,689/643,903
6. Step 6: Final answer
   x = 1,613,766.48