Finding the Third Proportional to 407,924 and 871,900

Step by Step Solution

1. Step 1: Write the proportion equation
   407,924 : 871,900 = 871,900 : x
2. Step 2: Convert to fraction form
   407,924/871,900 = 871,900/x
3. Step 3: Cross multiply
   407,924x = 871,900 × 871,900
4. Step 4: Simplify right side
   407,924x = 760,209,610,000
5. Step 5: Solve for x
   x = 760,209,610,000/407,924
6. Step 6: Final answer
   x = 1,863,605.99