Finding the Third Proportional to 374,142 and 819,780

Step by Step Solution

1. Step 1: Write the proportion equation
   374,142 : 819,780 = 819,780 : x
2. Step 2: Convert to fraction form
   374,142/819,780 = 819,780/x
3. Step 3: Cross multiply
   374,142x = 819,780 × 819,780
4. Step 4: Simplify right side
   374,142x = 672,039,248,400
5. Step 5: Solve for x
   x = 672,039,248,400/374,142
6. Step 6: Final answer
   x = 1,796,214.40