Finding the Third Proportional to 689,571 and 1,070,442

Step by Step Solution

1. Step 1: Write the proportion equation
   689,571 : 1,070,442 = 1,070,442 : x
2. Step 2: Convert to fraction form
   689,571/1,070,442 = 1,070,442/x
3. Step 3: Cross multiply
   689,571x = 1,070,442 × 1,070,442
4. Step 4: Simplify right side
   689,571x = 1,145,846,075,364
5. Step 5: Solve for x
   x = 1,145,846,075,364/689,571
6. Step 6: Final answer
   x = 1,661,679.62