Finding the Third Proportional to 288,356 and 632,846

Step by Step Solution

1. Step 1: Write the proportion equation
   288,356 : 632,846 = 632,846 : x
2. Step 2: Convert to fraction form
   288,356/632,846 = 632,846/x
3. Step 3: Cross multiply
   288,356x = 632,846 × 632,846
4. Step 4: Simplify right side
   288,356x = 400,494,059,716
5. Step 5: Solve for x
   x = 400,494,059,716/288,356
6. Step 6: Final answer
   x = 1,388,887.55