Finding the Third Proportional to 603,646 and 1,279,258

Step by Step Solution

1. Step 1: Write the proportion equation
   603,646 : 1,279,258 = 1,279,258 : x
2. Step 2: Convert to fraction form
   603,646/1,279,258 = 1,279,258/x
3. Step 3: Cross multiply
   603,646x = 1,279,258 × 1,279,258
4. Step 4: Simplify right side
   603,646x = 1,636,501,030,564
5. Step 5: Solve for x
   x = 1,636,501,030,564/603,646
6. Step 6: Final answer
   x = 2,711,027.71