Finding the Third Proportional to 66,612.38 and 142,722

Step by Step Solution

1. Step 1: Write the proportion equation
   66,612.38 : 142,722 = 142,722 : x
2. Step 2: Convert to fraction form
   66,612.38/142,722 = 142,722/x
3. Step 3: Cross multiply
   66,612.38x = 142,722 × 142,722
4. Step 4: Simplify right side
   66,612.38x = 20,369,569,284
5. Step 5: Solve for x
   x = 20,369,569,284/66,612.38
6. Step 6: Final answer
   x = 305,792.57