Finding the Third Proportional to 637,118 and 1,368,688

Step by Step Solution

1. Step 1: Write the proportion equation
   637,118 : 1,368,688 = 1,368,688 : x
2. Step 2: Convert to fraction form
   637,118/1,368,688 = 1,368,688/x
3. Step 3: Cross multiply
   637,118x = 1,368,688 × 1,368,688
4. Step 4: Simplify right side
   637,118x = 1,873,306,841,344
5. Step 5: Solve for x
   x = 1,873,306,841,344/637,118
6. Step 6: Final answer
   x = 2,940,282.40