Finding the Third Proportional to 142,491 and 222,363

Step by Step Solution

1. Step 1: Write the proportion equation
   142,491 : 222,363 = 222,363 : x
2. Step 2: Convert to fraction form
   142,491/222,363 = 222,363/x
3. Step 3: Cross multiply
   142,491x = 222,363 × 222,363
4. Step 4: Simplify right side
   142,491x = 49,445,303,769
5. Step 5: Solve for x
   x = 49,445,303,769/142,491
6. Step 6: Final answer
   x = 347,006.50