Finding the Third Proportional to 681,690 and 1,036,700

Step by Step Solution

1. Step 1: Write the proportion equation
   681,690 : 1,036,700 = 1,036,700 : x
2. Step 2: Convert to fraction form
   681,690/1,036,700 = 1,036,700/x
3. Step 3: Cross multiply
   681,690x = 1,036,700 × 1,036,700
4. Step 4: Simplify right side
   681,690x = 1,074,746,890,000
5. Step 5: Solve for x
   x = 1,074,746,890,000/681,690
6. Step 6: Final answer
   x = 1,576,591.84