Finding the Third Proportional to 142,651.75 and 301,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,651.75 : 301,216.50 = 301,216.50 : x
2. Step 2: Convert to fraction form
   142,651.75/301,216.50 = 301,216.50/x
3. Step 3: Cross multiply
   142,651.75x = 301,216.50 × 301,216.50
4. Step 4: Simplify right side
   142,651.75x = 90,731,379,872.25
5. Step 5: Solve for x
   x = 90,731,379,872.25/142,651.75
6. Step 6: Final answer
   x = 636,034.12