Finding the Third Proportional to 391,847.75 and 800,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   391,847.75 : 800,300.50 = 800,300.50 : x
2. Step 2: Convert to fraction form
   391,847.75/800,300.50 = 800,300.50/x
3. Step 3: Cross multiply
   391,847.75x = 800,300.50 × 800,300.50
4. Step 4: Simplify right side
   391,847.75x = 640,480,890,300.25
5. Step 5: Solve for x
   x = 640,480,890,300.25/391,847.75
6. Step 6: Final answer
   x = 1,634,514.66