Finding the Third Proportional to 817,173 and 1,268,262

Step by Step Solution

1. Step 1: Write the proportion equation
   817,173 : 1,268,262 = 1,268,262 : x
2. Step 2: Convert to fraction form
   817,173/1,268,262 = 1,268,262/x
3. Step 3: Cross multiply
   817,173x = 1,268,262 × 1,268,262
4. Step 4: Simplify right side
   817,173x = 1,608,488,500,644
5. Step 5: Solve for x
   x = 1,608,488,500,644/817,173
6. Step 6: Final answer
   x = 1,968,357.37