Finding the Third Proportional to 407,870 and 881,242

Step by Step Solution

1. Step 1: Write the proportion equation
   407,870 : 881,242 = 881,242 : x
2. Step 2: Convert to fraction form
   407,870/881,242 = 881,242/x
3. Step 3: Cross multiply
   407,870x = 881,242 × 881,242
4. Step 4: Simplify right side
   407,870x = 776,587,462,564
5. Step 5: Solve for x
   x = 776,587,462,564/407,870
6. Step 6: Final answer
   x = 1,904,007.31