Finding the Third Proportional to 688,302 and 1,036,618

Step by Step Solution

1. Step 1: Write the proportion equation
   688,302 : 1,036,618 = 1,036,618 : x
2. Step 2: Convert to fraction form
   688,302/1,036,618 = 1,036,618/x
3. Step 3: Cross multiply
   688,302x = 1,036,618 × 1,036,618
4. Step 4: Simplify right side
   688,302x = 1,074,576,877,924
5. Step 5: Solve for x
   x = 1,074,576,877,924/688,302
6. Step 6: Final answer
   x = 1,561,199.70