Finding the Third Proportional to 142,488.75 and 222,359.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,488.75 : 222,359.50 = 222,359.50 : x
2. Step 2: Convert to fraction form
   142,488.75/222,359.50 = 222,359.50/x
3. Step 3: Cross multiply
   142,488.75x = 222,359.50 × 222,359.50
4. Step 4: Simplify right side
   142,488.75x = 49,443,747,240.25
5. Step 5: Solve for x
   x = 49,443,747,240.25/142,488.75
6. Step 6: Final answer
   x = 347,001.06