Finding the Third Proportional to 643,814 and 1,019,223

Step by Step Solution

1. Step 1: Write the proportion equation
   643,814 : 1,019,223 = 1,019,223 : x
2. Step 2: Convert to fraction form
   643,814/1,019,223 = 1,019,223/x
3. Step 3: Cross multiply
   643,814x = 1,019,223 × 1,019,223
4. Step 4: Simplify right side
   643,814x = 1,038,815,523,729
5. Step 5: Solve for x
   x = 1,038,815,523,729/643,814
6. Step 6: Final answer
   x = 1,613,533.60