Finding the Third Proportional to 864,660 and 1,381,308

Step by Step Solution

1. Step 1: Write the proportion equation
   864,660 : 1,381,308 = 1,381,308 : x
2. Step 2: Convert to fraction form
   864,660/1,381,308 = 1,381,308/x
3. Step 3: Cross multiply
   864,660x = 1,381,308 × 1,381,308
4. Step 4: Simplify right side
   864,660x = 1,908,011,790,864
5. Step 5: Solve for x
   x = 1,908,011,790,864/864,660
6. Step 6: Final answer
   x = 2,206,661.34