Finding the Third Proportional to 374,226 and 820,210

Step by Step Solution

1. Step 1: Write the proportion equation
   374,226 : 820,210 = 820,210 : x
2. Step 2: Convert to fraction form
   374,226/820,210 = 820,210/x
3. Step 3: Cross multiply
   374,226x = 820,210 × 820,210
4. Step 4: Simplify right side
   374,226x = 672,744,444,100
5. Step 5: Solve for x
   x = 672,744,444,100/374,226
6. Step 6: Final answer
   x = 1,797,695.63