Finding the Third Proportional to 142,818.19 and 338,362.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,818.19 : 338,362.31 = 338,362.31 : x
2. Step 2: Convert to fraction form
   142,818.19/338,362.31 = 338,362.31/x
3. Step 3: Cross multiply
   142,818.19x = 338,362.31 × 338,362.31
4. Step 4: Simplify right side
   142,818.19x = 114,489,054,520.35
5. Step 5: Solve for x
   x = 114,489,054,520.35/142,818.19
6. Step 6: Final answer
   x = 801,641.98