Finding the Third Proportional to 681,606 and 1,069,315

Step by Step Solution

1. Step 1: Write the proportion equation
   681,606 : 1,069,315 = 1,069,315 : x
2. Step 2: Convert to fraction form
   681,606/1,069,315 = 1,069,315/x
3. Step 3: Cross multiply
   681,606x = 1,069,315 × 1,069,315
4. Step 4: Simplify right side
   681,606x = 1,143,434,569,225
5. Step 5: Solve for x
   x = 1,143,434,569,225/681,606
6. Step 6: Final answer
   x = 1,677,559.42