Finding the Third Proportional to 143,161.50 and 209,814

Step by Step Solution

1. Step 1: Write the proportion equation
   143,161.50 : 209,814 = 209,814 : x
2. Step 2: Convert to fraction form
   143,161.50/209,814 = 209,814/x
3. Step 3: Cross multiply
   143,161.50x = 209,814 × 209,814
4. Step 4: Simplify right side
   143,161.50x = 44,021,914,596
5. Step 5: Solve for x
   x = 44,021,914,596/143,161.50
6. Step 6: Final answer
   x = 307,498.28