Finding the Third Proportional to 189,228 and 283,870

Step by Step Solution

1. Step 1: Write the proportion equation
   189,228 : 283,870 = 283,870 : x
2. Step 2: Convert to fraction form
   189,228/283,870 = 283,870/x
3. Step 3: Cross multiply
   189,228x = 283,870 × 283,870
4. Step 4: Simplify right side
   189,228x = 80,582,176,900
5. Step 5: Solve for x
   x = 80,582,176,900/189,228
6. Step 6: Final answer
   x = 425,847.00