Finding the Third Proportional to 138,485 and 226,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,485 : 226,111.50 = 226,111.50 : x
2. Step 2: Convert to fraction form
   138,485/226,111.50 = 226,111.50/x
3. Step 3: Cross multiply
   138,485x = 226,111.50 × 226,111.50
4. Step 4: Simplify right side
   138,485x = 51,126,410,432.25
5. Step 5: Solve for x
   x = 51,126,410,432.25/138,485
6. Step 6: Final answer
   x = 369,183.74