Finding the Third Proportional to 138,610.50 and 235,026

Step by Step Solution

1. Step 1: Write the proportion equation
   138,610.50 : 235,026 = 235,026 : x
2. Step 2: Convert to fraction form
   138,610.50/235,026 = 235,026/x
3. Step 3: Cross multiply
   138,610.50x = 235,026 × 235,026
4. Step 4: Simplify right side
   138,610.50x = 55,237,220,676
5. Step 5: Solve for x
   x = 55,237,220,676/138,610.50
6. Step 6: Final answer
   x = 398,506.76