Finding the Third Proportional to 185,443.50 and 279,030

Step by Step Solution

1. Step 1: Write the proportion equation
   185,443.50 : 279,030 = 279,030 : x
2. Step 2: Convert to fraction form
   185,443.50/279,030 = 279,030/x
3. Step 3: Cross multiply
   185,443.50x = 279,030 × 279,030
4. Step 4: Simplify right side
   185,443.50x = 77,857,740,900
5. Step 5: Solve for x
   x = 77,857,740,900/185,443.50
6. Step 6: Final answer
   x = 419,846.16