Finding the Third Proportional to 303,799.50 and 654,345

Step by Step Solution

1. Step 1: Write the proportion equation
   303,799.50 : 654,345 = 654,345 : x
2. Step 2: Convert to fraction form
   303,799.50/654,345 = 654,345/x
3. Step 3: Cross multiply
   303,799.50x = 654,345 × 654,345
4. Step 4: Simplify right side
   303,799.50x = 428,167,379,025
5. Step 5: Solve for x
   x = 428,167,379,025/303,799.50
6. Step 6: Final answer
   x = 1,409,374.86