Finding the Third Proportional to 601,990 and 819,942

Step by Step Solution

1. Step 1: Write the proportion equation
   601,990 : 819,942 = 819,942 : x
2. Step 2: Convert to fraction form
   601,990/819,942 = 819,942/x
3. Step 3: Cross multiply
   601,990x = 819,942 × 819,942
4. Step 4: Simplify right side
   601,990x = 672,304,883,364
5. Step 5: Solve for x
   x = 672,304,883,364/601,990
6. Step 6: Final answer
   x = 1,116,804.07