Finding the Third Proportional to 646,280 and 1,323,904

Step by Step Solution

1. Step 1: Write the proportion equation
   646,280 : 1,323,904 = 1,323,904 : x
2. Step 2: Convert to fraction form
   646,280/1,323,904 = 1,323,904/x
3. Step 3: Cross multiply
   646,280x = 1,323,904 × 1,323,904
4. Step 4: Simplify right side
   646,280x = 1,752,721,801,216
5. Step 5: Solve for x
   x = 1,752,721,801,216/646,280
6. Step 6: Final answer
   x = 2,712,016.16