Finding the Third Proportional to 142,488.70 and 222,359.55

Step by Step Solution

1. Step 1: Write the proportion equation
   142,488.70 : 222,359.55 = 222,359.55 : x
2. Step 2: Convert to fraction form
   142,488.70/222,359.55 = 222,359.55/x
3. Step 3: Cross multiply
   142,488.70x = 222,359.55 × 222,359.55
4. Step 4: Simplify right side
   142,488.70x = 49,443,771,560.82
5. Step 5: Solve for x
   x = 49,443,771,560.82/142,488.70
6. Step 6: Final answer
   x = 347,001.34