Finding the Third Proportional to 811,632 and 1,261,656

Step by Step Solution

1. Step 1: Write the proportion equation
   811,632 : 1,261,656 = 1,261,656 : x
2. Step 2: Convert to fraction form
   811,632/1,261,656 = 1,261,656/x
3. Step 3: Cross multiply
   811,632x = 1,261,656 × 1,261,656
4. Step 4: Simplify right side
   811,632x = 1,591,775,862,336
5. Step 5: Solve for x
   x = 1,591,775,862,336/811,632
6. Step 6: Final answer
   x = 1,961,203.92