Finding the Third Proportional to 811,726 and 1,261,788

Step by Step Solution

1. Step 1: Write the proportion equation
   811,726 : 1,261,788 = 1,261,788 : x
2. Step 2: Convert to fraction form
   811,726/1,261,788 = 1,261,788/x
3. Step 3: Cross multiply
   811,726x = 1,261,788 × 1,261,788
4. Step 4: Simplify right side
   811,726x = 1,592,108,956,944
5. Step 5: Solve for x
   x = 1,592,108,956,944/811,726
6. Step 6: Final answer
   x = 1,961,387.16