Finding the Third Proportional to 373,891.50 and 815,454

Step by Step Solution

1. Step 1: Write the proportion equation
   373,891.50 : 815,454 = 815,454 : x
2. Step 2: Convert to fraction form
   373,891.50/815,454 = 815,454/x
3. Step 3: Cross multiply
   373,891.50x = 815,454 × 815,454
4. Step 4: Simplify right side
   373,891.50x = 664,965,226,116
5. Step 5: Solve for x
   x = 664,965,226,116/373,891.50
6. Step 6: Final answer
   x = 1,778,497.84