Finding the Third Proportional to 689,618 and 1,059,735

Step by Step Solution

1. Step 1: Write the proportion equation
   689,618 : 1,059,735 = 1,059,735 : x
2. Step 2: Convert to fraction form
   689,618/1,059,735 = 1,059,735/x
3. Step 3: Cross multiply
   689,618x = 1,059,735 × 1,059,735
4. Step 4: Simplify right side
   689,618x = 1,123,038,270,225
5. Step 5: Solve for x
   x = 1,123,038,270,225/689,618
6. Step 6: Final answer
   x = 1,628,493.27