Finding the Third Proportional to 368,698.50 and 504,585

Step by Step Solution

1. Step 1: Write the proportion equation
   368,698.50 : 504,585 = 504,585 : x
2. Step 2: Convert to fraction form
   368,698.50/504,585 = 504,585/x
3. Step 3: Cross multiply
   368,698.50x = 504,585 × 504,585
4. Step 4: Simplify right side
   368,698.50x = 254,606,022,225
5. Step 5: Solve for x
   x = 254,606,022,225/368,698.50
6. Step 6: Final answer
   x = 690,553.45