Finding the Third Proportional to 686,854 and 1,510,736

Step by Step Solution

1. Step 1: Write the proportion equation
   686,854 : 1,510,736 = 1,510,736 : x
2. Step 2: Convert to fraction form
   686,854/1,510,736 = 1,510,736/x
3. Step 3: Cross multiply
   686,854x = 1,510,736 × 1,510,736
4. Step 4: Simplify right side
   686,854x = 2,282,323,261,696
5. Step 5: Solve for x
   x = 2,282,323,261,696/686,854
6. Step 6: Final answer
   x = 3,322,865.21