Finding the Third Proportional to 372,715.50 and 818,650.50

Step by Step Solution

1. Step 1: Write the proportion equation
   372,715.50 : 818,650.50 = 818,650.50 : x
2. Step 2: Convert to fraction form
   372,715.50/818,650.50 = 818,650.50/x
3. Step 3: Cross multiply
   372,715.50x = 818,650.50 × 818,650.50
4. Step 4: Simplify right side
   372,715.50x = 670,188,641,150.25
5. Step 5: Solve for x
   x = 670,188,641,150.25/372,715.50
6. Step 6: Final answer
   x = 1,798,123.88