Finding the Third Proportional to 616,280 and 1,333,640

Step by Step Solution

1. Step 1: Write the proportion equation
   616,280 : 1,333,640 = 1,333,640 : x
2. Step 2: Convert to fraction form
   616,280/1,333,640 = 1,333,640/x
3. Step 3: Cross multiply
   616,280x = 1,333,640 × 1,333,640
4. Step 4: Simplify right side
   616,280x = 1,778,595,649,600
5. Step 5: Solve for x
   x = 1,778,595,649,600/616,280
6. Step 6: Final answer
   x = 2,886,018.77