Finding the Third Proportional to 139,879.50 and 301,872

Step by Step Solution

1. Step 1: Write the proportion equation
   139,879.50 : 301,872 = 301,872 : x
2. Step 2: Convert to fraction form
   139,879.50/301,872 = 301,872/x
3. Step 3: Cross multiply
   139,879.50x = 301,872 × 301,872
4. Step 4: Simplify right side
   139,879.50x = 91,126,704,384
5. Step 5: Solve for x
   x = 91,126,704,384/139,879.50
6. Step 6: Final answer
   x = 651,465.76