Finding the Third Proportional to 394,695 and 864,505.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,695 : 864,505.50 = 864,505.50 : x
2. Step 2: Convert to fraction form
   394,695/864,505.50 = 864,505.50/x
3. Step 3: Cross multiply
   394,695x = 864,505.50 × 864,505.50
4. Step 4: Simplify right side
   394,695x = 747,369,759,530.25
5. Step 5: Solve for x
   x = 747,369,759,530.25/394,695
6. Step 6: Final answer
   x = 1,893,537.44