Finding the Third Proportional to 66,628 and 142,732

Step by Step Solution

1. Step 1: Write the proportion equation
   66,628 : 142,732 = 142,732 : x
2. Step 2: Convert to fraction form
   66,628/142,732 = 142,732/x
3. Step 3: Cross multiply
   66,628x = 142,732 × 142,732
4. Step 4: Simplify right side
   66,628x = 20,372,423,824
5. Step 5: Solve for x
   x = 20,372,423,824/66,628
6. Step 6: Final answer
   x = 305,763.70