Finding the Third Proportional to 372,059.25 and 815,059.50

Step by Step Solution

1. Step 1: Write the proportion equation
   372,059.25 : 815,059.50 = 815,059.50 : x
2. Step 2: Convert to fraction form
   372,059.25/815,059.50 = 815,059.50/x
3. Step 3: Cross multiply
   372,059.25x = 815,059.50 × 815,059.50
4. Step 4: Simplify right side
   372,059.25x = 664,321,988,540.25
5. Step 5: Solve for x
   x = 664,321,988,540.25/372,059.25
6. Step 6: Final answer
   x = 1,785,527.41