Finding the Third Proportional to 249,579 and 374,245.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,579 : 374,245.50 = 374,245.50 : x
2. Step 2: Convert to fraction form
   249,579/374,245.50 = 374,245.50/x
3. Step 3: Cross multiply
   249,579x = 374,245.50 × 374,245.50
4. Step 4: Simplify right side
   249,579x = 140,059,694,270.25
5. Step 5: Solve for x
   x = 140,059,694,270.25/249,579
6. Step 6: Final answer
   x = 561,183.81