Finding the Third Proportional to 812,870 and 1,265,824

Step by Step Solution

1. Step 1: Write the proportion equation
   812,870 : 1,265,824 = 1,265,824 : x
2. Step 2: Convert to fraction form
   812,870/1,265,824 = 1,265,824/x
3. Step 3: Cross multiply
   812,870x = 1,265,824 × 1,265,824
4. Step 4: Simplify right side
   812,870x = 1,602,310,398,976
5. Step 5: Solve for x
   x = 1,602,310,398,976/812,870
6. Step 6: Final answer
   x = 1,971,176.69