Finding the Third Proportional to 333,990 and 787,968

Step by Step Solution

1. Step 1: Write the proportion equation
   333,990 : 787,968 = 787,968 : x
2. Step 2: Convert to fraction form
   333,990/787,968 = 787,968/x
3. Step 3: Cross multiply
   333,990x = 787,968 × 787,968
4. Step 4: Simplify right side
   333,990x = 620,893,569,024
5. Step 5: Solve for x
   x = 620,893,569,024/333,990
6. Step 6: Final answer
   x = 1,859,018.44