Finding the Third Proportional to 249,906 and 356,161.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,906 : 356,161.50 = 356,161.50 : x
2. Step 2: Convert to fraction form
   249,906/356,161.50 = 356,161.50/x
3. Step 3: Cross multiply
   249,906x = 356,161.50 × 356,161.50
4. Step 4: Simplify right side
   249,906x = 126,851,014,082.25
5. Step 5: Solve for x
   x = 126,851,014,082.25/249,906
6. Step 6: Final answer
   x = 507,594.91