Finding the Third Proportional to 687,618 and 1,051,190

Step by Step Solution

1. Step 1: Write the proportion equation
   687,618 : 1,051,190 = 1,051,190 : x
2. Step 2: Convert to fraction form
   687,618/1,051,190 = 1,051,190/x
3. Step 3: Cross multiply
   687,618x = 1,051,190 × 1,051,190
4. Step 4: Simplify right side
   687,618x = 1,105,000,416,100
5. Step 5: Solve for x
   x = 1,105,000,416,100/687,618
6. Step 6: Final answer
   x = 1,606,997.51