Finding the Third Proportional to 641,886 and 993,384

Step by Step Solution

1. Step 1: Write the proportion equation
   641,886 : 993,384 = 993,384 : x
2. Step 2: Convert to fraction form
   641,886/993,384 = 993,384/x
3. Step 3: Cross multiply
   641,886x = 993,384 × 993,384
4. Step 4: Simplify right side
   641,886x = 986,811,771,456
5. Step 5: Solve for x
   x = 986,811,771,456/641,886
6. Step 6: Final answer
   x = 1,537,362.98