Finding the Third Proportional to 373,899.38 and 815,467.50

Step by Step Solution

1. Step 1: Write the proportion equation
   373,899.38 : 815,467.50 = 815,467.50 : x
2. Step 2: Convert to fraction form
   373,899.38/815,467.50 = 815,467.50/x
3. Step 3: Cross multiply
   373,899.38x = 815,467.50 × 815,467.50
4. Step 4: Simplify right side
   373,899.38x = 664,987,243,556.25
5. Step 5: Solve for x
   x = 664,987,243,556.25/373,899.38
6. Step 6: Final answer
   x = 1,778,519.27