Finding the Third Proportional to 120,301 and 243,517

Step by Step Solution

1. Step 1: Write the proportion equation
   120,301 : 243,517 = 243,517 : x
2. Step 2: Convert to fraction form
   120,301/243,517 = 243,517/x
3. Step 3: Cross multiply
   120,301x = 243,517 × 243,517
4. Step 4: Simplify right side
   120,301x = 59,300,529,289
5. Step 5: Solve for x
   x = 59,300,529,289/120,301
6. Step 6: Final answer
   x = 492,934.63