Finding the Third Proportional to 864,615 and 1,381,242

Step by Step Solution

1. Step 1: Write the proportion equation
   864,615 : 1,381,242 = 1,381,242 : x
2. Step 2: Convert to fraction form
   864,615/1,381,242 = 1,381,242/x
3. Step 3: Cross multiply
   864,615x = 1,381,242 × 1,381,242
4. Step 4: Simplify right side
   864,615x = 1,907,829,462,564
5. Step 5: Solve for x
   x = 1,907,829,462,564/864,615
6. Step 6: Final answer
   x = 2,206,565.31