Finding the Third Proportional to 142,490 and 222,362

Step by Step Solution

1. Step 1: Write the proportion equation
   142,490 : 222,362 = 222,362 : x
2. Step 2: Convert to fraction form
   142,490/222,362 = 222,362/x
3. Step 3: Cross multiply
   142,490x = 222,362 × 222,362
4. Step 4: Simplify right side
   142,490x = 49,444,859,044
5. Step 5: Solve for x
   x = 49,444,859,044/142,490
6. Step 6: Final answer
   x = 347,005.82