Finding the Third Proportional to 688,186 and 1,036,257

Step by Step Solution

1. Step 1: Write the proportion equation
   688,186 : 1,036,257 = 1,036,257 : x
2. Step 2: Convert to fraction form
   688,186/1,036,257 = 1,036,257/x
3. Step 3: Cross multiply
   688,186x = 1,036,257 × 1,036,257
4. Step 4: Simplify right side
   688,186x = 1,073,828,570,049
5. Step 5: Solve for x
   x = 1,073,828,570,049/688,186
6. Step 6: Final answer
   x = 1,560,375.49