Finding the Third Proportional to 142,164 and 280,318.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,164 : 280,318.50 = 280,318.50 : x
2. Step 2: Convert to fraction form
   142,164/280,318.50 = 280,318.50/x
3. Step 3: Cross multiply
   142,164x = 280,318.50 × 280,318.50
4. Step 4: Simplify right side
   142,164x = 78,578,461,442.25
5. Step 5: Solve for x
   x = 78,578,461,442.25/142,164
6. Step 6: Final answer
   x = 552,731.08