Finding the Third Proportional to 864,626 and 1,381,258

Step by Step Solution

1. Step 1: Write the proportion equation
   864,626 : 1,381,258 = 1,381,258 : x
2. Step 2: Convert to fraction form
   864,626/1,381,258 = 1,381,258/x
3. Step 3: Cross multiply
   864,626x = 1,381,258 × 1,381,258
4. Step 4: Simplify right side
   864,626x = 1,907,873,662,564
5. Step 5: Solve for x
   x = 1,907,873,662,564/864,626
6. Step 6: Final answer
   x = 2,206,588.35