Finding the Third Proportional to 686,862 and 1,050,690

Step by Step Solution

1. Step 1: Write the proportion equation
   686,862 : 1,050,690 = 1,050,690 : x
2. Step 2: Convert to fraction form
   686,862/1,050,690 = 1,050,690/x
3. Step 3: Cross multiply
   686,862x = 1,050,690 × 1,050,690
4. Step 4: Simplify right side
   686,862x = 1,103,949,476,100
5. Step 5: Solve for x
   x = 1,103,949,476,100/686,862
6. Step 6: Final answer
   x = 1,607,236.21