Finding the Third Proportional to 200,408 and 300,060

Step by Step Solution

1. Step 1: Write the proportion equation
   200,408 : 300,060 = 300,060 : x
2. Step 2: Convert to fraction form
   200,408/300,060 = 300,060/x
3. Step 3: Cross multiply
   200,408x = 300,060 × 300,060
4. Step 4: Simplify right side
   200,408x = 90,036,003,600
5. Step 5: Solve for x
   x = 90,036,003,600/200,408
6. Step 6: Final answer
   x = 449,263.52