Finding the Third Proportional to 864,716.50 and 1,381,390

Step by Step Solution

1. Step 1: Write the proportion equation
   864,716.50 : 1,381,390 = 1,381,390 : x
2. Step 2: Convert to fraction form
   864,716.50/1,381,390 = 1,381,390/x
3. Step 3: Cross multiply
   864,716.50x = 1,381,390 × 1,381,390
4. Step 4: Simplify right side
   864,716.50x = 1,908,238,332,100
5. Step 5: Solve for x
   x = 1,908,238,332,100/864,716.50
6. Step 6: Final answer
   x = 2,206,779.14