Finding the Third Proportional to 324,237 and 490,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   324,237 : 490,819.50 = 490,819.50 : x
2. Step 2: Convert to fraction form
   324,237/490,819.50 = 490,819.50/x
3. Step 3: Cross multiply
   324,237x = 490,819.50 × 490,819.50
4. Step 4: Simplify right side
   324,237x = 240,903,781,580.25
5. Step 5: Solve for x
   x = 240,903,781,580.25/324,237
6. Step 6: Final answer
   x = 742,986.71