Finding the Third Proportional to 871,173 and 1,868,456.25

Step by Step Solution

1. Step 1: Write the proportion equation
   871,173 : 1,868,456.25 = 1,868,456.25 : x
2. Step 2: Convert to fraction form
   871,173/1,868,456.25 = 1,868,456.25/x
3. Step 3: Cross multiply
   871,173x = 1,868,456.25 × 1,868,456.25
4. Step 4: Simplify right side
   871,173x = 3,491,128,758,164.06
5. Step 5: Solve for x
   x = 3,491,128,758,164.06/871,173
6. Step 6: Final answer
   x = 4,007,388.61