Finding the Third Proportional to 680,736 and 1,485,258

Step by Step Solution

1. Step 1: Write the proportion equation
   680,736 : 1,485,258 = 1,485,258 : x
2. Step 2: Convert to fraction form
   680,736/1,485,258 = 1,485,258/x
3. Step 3: Cross multiply
   680,736x = 1,485,258 × 1,485,258
4. Step 4: Simplify right side
   680,736x = 2,205,991,326,564
5. Step 5: Solve for x
   x = 2,205,991,326,564/680,736
6. Step 6: Final answer
   x = 3,240,597.42