Finding the Third Proportional to 239,139 and 375,178.50

Step by Step Solution

1. Step 1: Write the proportion equation
   239,139 : 375,178.50 = 375,178.50 : x
2. Step 2: Convert to fraction form
   239,139/375,178.50 = 375,178.50/x
3. Step 3: Cross multiply
   239,139x = 375,178.50 × 375,178.50
4. Step 4: Simplify right side
   239,139x = 140,758,906,862.25
5. Step 5: Solve for x
   x = 140,758,906,862.25/239,139
6. Step 6: Final answer
   x = 588,607.07