Finding the Third Proportional to 397,221.75 and 868,716

Step by Step Solution

1. Step 1: Write the proportion equation
   397,221.75 : 868,716 = 868,716 : x
2. Step 2: Convert to fraction form
   397,221.75/868,716 = 868,716/x
3. Step 3: Cross multiply
   397,221.75x = 868,716 × 868,716
4. Step 4: Simplify right side
   397,221.75x = 754,667,488,656
5. Step 5: Solve for x
   x = 754,667,488,656/397,221.75
6. Step 6: Final answer
   x = 1,899,864.47