Finding the Third Proportional to 373,909.50 and 816,345

Step by Step Solution

1. Step 1: Write the proportion equation
   373,909.50 : 816,345 = 816,345 : x
2. Step 2: Convert to fraction form
   373,909.50/816,345 = 816,345/x
3. Step 3: Cross multiply
   373,909.50x = 816,345 × 816,345
4. Step 4: Simplify right side
   373,909.50x = 666,419,159,025
5. Step 5: Solve for x
   x = 666,419,159,025/373,909.50
6. Step 6: Final answer
   x = 1,782,300.69