Finding the Third Proportional to 154,386 and 231,003

Step by Step Solution

1. Step 1: Write the proportion equation
   154,386 : 231,003 = 231,003 : x
2. Step 2: Convert to fraction form
   154,386/231,003 = 231,003/x
3. Step 3: Cross multiply
   154,386x = 231,003 × 231,003
4. Step 4: Simplify right side
   154,386x = 53,362,386,009
5. Step 5: Solve for x
   x = 53,362,386,009/154,386
6. Step 6: Final answer
   x = 345,642.65