Finding the Third Proportional to 319,873.50 and 684,030

Step by Step Solution

1. Step 1: Write the proportion equation
   319,873.50 : 684,030 = 684,030 : x
2. Step 2: Convert to fraction form
   319,873.50/684,030 = 684,030/x
3. Step 3: Cross multiply
   319,873.50x = 684,030 × 684,030
4. Step 4: Simplify right side
   319,873.50x = 467,897,040,900
5. Step 5: Solve for x
   x = 467,897,040,900/319,873.50
6. Step 6: Final answer
   x = 1,462,756.50