Finding the Third Proportional to 822,393 and 1,290,384

Step by Step Solution

1. Step 1: Write the proportion equation
   822,393 : 1,290,384 = 1,290,384 : x
2. Step 2: Convert to fraction form
   822,393/1,290,384 = 1,290,384/x
3. Step 3: Cross multiply
   822,393x = 1,290,384 × 1,290,384
4. Step 4: Simplify right side
   822,393x = 1,665,090,867,456
5. Step 5: Solve for x
   x = 1,665,090,867,456/822,393
6. Step 6: Final answer
   x = 2,024,689.98