Finding the Third Proportional to 812,852 and 1,265,799

Step by Step Solution

1. Step 1: Write the proportion equation
   812,852 : 1,265,799 = 1,265,799 : x
2. Step 2: Convert to fraction form
   812,852/1,265,799 = 1,265,799/x
3. Step 3: Cross multiply
   812,852x = 1,265,799 × 1,265,799
4. Step 4: Simplify right side
   812,852x = 1,602,247,108,401
5. Step 5: Solve for x
   x = 1,602,247,108,401/812,852
6. Step 6: Final answer
   x = 1,971,142.48