Finding the Third Proportional to 313,362 and 688,932

Step by Step Solution

1. Step 1: Write the proportion equation
   313,362 : 688,932 = 688,932 : x
2. Step 2: Convert to fraction form
   313,362/688,932 = 688,932/x
3. Step 3: Cross multiply
   313,362x = 688,932 × 688,932
4. Step 4: Simplify right side
   313,362x = 474,627,300,624
5. Step 5: Solve for x
   x = 474,627,300,624/313,362
6. Step 6: Final answer
   x = 1,514,629.41