Finding the Third Proportional to 374,866.50 and 816,288

Step by Step Solution

1. Step 1: Write the proportion equation
   374,866.50 : 816,288 = 816,288 : x
2. Step 2: Convert to fraction form
   374,866.50/816,288 = 816,288/x
3. Step 3: Cross multiply
   374,866.50x = 816,288 × 816,288
4. Step 4: Simplify right side
   374,866.50x = 666,326,098,944
5. Step 5: Solve for x
   x = 666,326,098,944/374,866.50
6. Step 6: Final answer
   x = 1,777,502.39