Finding the Third Proportional to 374,868 and 816,290

Step by Step Solution

1. Step 1: Write the proportion equation
   374,868 : 816,290 = 816,290 : x
2. Step 2: Convert to fraction form
   374,868/816,290 = 816,290/x
3. Step 3: Cross multiply
   374,868x = 816,290 × 816,290
4. Step 4: Simplify right side
   374,868x = 666,329,364,100
5. Step 5: Solve for x
   x = 666,329,364,100/374,868
6. Step 6: Final answer
   x = 1,777,503.99