Finding the Third Proportional to 138,558 and 223,150.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,558 : 223,150.50 = 223,150.50 : x
2. Step 2: Convert to fraction form
   138,558/223,150.50 = 223,150.50/x
3. Step 3: Cross multiply
   138,558x = 223,150.50 × 223,150.50
4. Step 4: Simplify right side
   138,558x = 49,796,145,650.25
5. Step 5: Solve for x
   x = 49,796,145,650.25/138,558
6. Step 6: Final answer
   x = 359,388.46