Finding the Third Proportional to 326,908 and 499,870

Step by Step Solution

1. Step 1: Write the proportion equation
   326,908 : 499,870 = 499,870 : x
2. Step 2: Convert to fraction form
   326,908/499,870 = 499,870/x
3. Step 3: Cross multiply
   326,908x = 499,870 × 499,870
4. Step 4: Simplify right side
   326,908x = 249,870,016,900
5. Step 5: Solve for x
   x = 249,870,016,900/326,908
6. Step 6: Final answer
   x = 764,343.54