Finding the Third Proportional to 142,813.69 and 221,401.13

Step by Step Solution

1. Step 1: Write the proportion equation
   142,813.69 : 221,401.13 = 221,401.13 : x
2. Step 2: Convert to fraction form
   142,813.69/221,401.13 = 221,401.13/x
3. Step 3: Cross multiply
   142,813.69x = 221,401.13 × 221,401.13
4. Step 4: Simplify right side
   142,813.69x = 49,018,458,151.27
5. Step 5: Solve for x
   x = 49,018,458,151.27/142,813.69
6. Step 6: Final answer
   x = 343,233.61