Finding the Third Proportional to 373,963.50 and 815,616

Step by Step Solution

1. Step 1: Write the proportion equation
   373,963.50 : 815,616 = 815,616 : x
2. Step 2: Convert to fraction form
   373,963.50/815,616 = 815,616/x
3. Step 3: Cross multiply
   373,963.50x = 815,616 × 815,616
4. Step 4: Simplify right side
   373,963.50x = 665,229,459,456
5. Step 5: Solve for x
   x = 665,229,459,456/373,963.50
6. Step 6: Final answer
   x = 1,778,862.00