Finding the Third Proportional to 686,812 and 1,050,630

Step by Step Solution

1. Step 1: Write the proportion equation
   686,812 : 1,050,630 = 1,050,630 : x
2. Step 2: Convert to fraction form
   686,812/1,050,630 = 1,050,630/x
3. Step 3: Cross multiply
   686,812x = 1,050,630 × 1,050,630
4. Step 4: Simplify right side
   686,812x = 1,103,823,396,900
5. Step 5: Solve for x
   x = 1,103,823,396,900/686,812
6. Step 6: Final answer
   x = 1,607,169.64