Finding the Third Proportional to 147,990 and 231,906

Step by Step Solution

1. Step 1: Write the proportion equation
   147,990 : 231,906 = 231,906 : x
2. Step 2: Convert to fraction form
   147,990/231,906 = 231,906/x
3. Step 3: Cross multiply
   147,990x = 231,906 × 231,906
4. Step 4: Simplify right side
   147,990x = 53,780,392,836
5. Step 5: Solve for x
   x = 53,780,392,836/147,990
6. Step 6: Final answer
   x = 363,405.59