Finding the Third Proportional to 805,086 and 1,645,128

Step by Step Solution

1. Step 1: Write the proportion equation
   805,086 : 1,645,128 = 1,645,128 : x
2. Step 2: Convert to fraction form
   805,086/1,645,128 = 1,645,128/x
3. Step 3: Cross multiply
   805,086x = 1,645,128 × 1,645,128
4. Step 4: Simplify right side
   805,086x = 2,706,446,136,384
5. Step 5: Solve for x
   x = 2,706,446,136,384/805,086
6. Step 6: Final answer
   x = 3,361,685.75