Finding the Third Proportional to 657,720 and 1,367,280

Step by Step Solution

1. Step 1: Write the proportion equation
   657,720 : 1,367,280 = 1,367,280 : x
2. Step 2: Convert to fraction form
   657,720/1,367,280 = 1,367,280/x
3. Step 3: Cross multiply
   657,720x = 1,367,280 × 1,367,280
4. Step 4: Simplify right side
   657,720x = 1,869,454,598,400
5. Step 5: Solve for x
   x = 1,869,454,598,400/657,720
6. Step 6: Final answer
   x = 2,842,325.91