Finding the Third Proportional to 142,171.50 and 300,651

Step by Step Solution

1. Step 1: Write the proportion equation
   142,171.50 : 300,651 = 300,651 : x
2. Step 2: Convert to fraction form
   142,171.50/300,651 = 300,651/x
3. Step 3: Cross multiply
   142,171.50x = 300,651 × 300,651
4. Step 4: Simplify right side
   142,171.50x = 90,391,023,801
5. Step 5: Solve for x
   x = 90,391,023,801/142,171.50
6. Step 6: Final answer
   x = 635,788.63