Finding the Third Proportional to 812,874 and 1,265,830

Step by Step Solution

1. Step 1: Write the proportion equation
   812,874 : 1,265,830 = 1,265,830 : x
2. Step 2: Convert to fraction form
   812,874/1,265,830 = 1,265,830/x
3. Step 3: Cross multiply
   812,874x = 1,265,830 × 1,265,830
4. Step 4: Simplify right side
   812,874x = 1,602,325,588,900
5. Step 5: Solve for x
   x = 1,602,325,588,900/812,874
6. Step 6: Final answer
   x = 1,971,185.68