Finding the Third Proportional to 154,490.63 and 239,086.69

Step by Step Solution

1. Step 1: Write the proportion equation
   154,490.63 : 239,086.69 = 239,086.69 : x
2. Step 2: Convert to fraction form
   154,490.63/239,086.69 = 239,086.69/x
3. Step 3: Cross multiply
   154,490.63x = 239,086.69 × 239,086.69
4. Step 4: Simplify right side
   154,490.63x = 57,162,444,139.72
5. Step 5: Solve for x
   x = 57,162,444,139.72/154,490.63
6. Step 6: Final answer
   x = 370,005.91