Finding the Third Proportional to 646,776 and 1,360,584

Step by Step Solution

1. Step 1: Write the proportion equation
   646,776 : 1,360,584 = 1,360,584 : x
2. Step 2: Convert to fraction form
   646,776/1,360,584 = 1,360,584/x
3. Step 3: Cross multiply
   646,776x = 1,360,584 × 1,360,584
4. Step 4: Simplify right side
   646,776x = 1,851,188,821,056
5. Step 5: Solve for x
   x = 1,851,188,821,056/646,776
6. Step 6: Final answer
   x = 2,862,179.21