Finding the Third Proportional to 405,571 and 938,870

Step by Step Solution

1. Step 1: Write the proportion equation
   405,571 : 938,870 = 938,870 : x
2. Step 2: Convert to fraction form
   405,571/938,870 = 938,870/x
3. Step 3: Cross multiply
   405,571x = 938,870 × 938,870
4. Step 4: Simplify right side
   405,571x = 881,476,876,900
5. Step 5: Solve for x
   x = 881,476,876,900/405,571
6. Step 6: Final answer
   x = 2,173,421.86