Finding the Third Proportional to 79,870 and 189,928

Step by Step Solution

1. Step 1: Write the proportion equation
   79,870 : 189,928 = 189,928 : x
2. Step 2: Convert to fraction form
   79,870/189,928 = 189,928/x
3. Step 3: Cross multiply
   79,870x = 189,928 × 189,928
4. Step 4: Simplify right side
   79,870x = 36,072,645,184
5. Step 5: Solve for x
   x = 36,072,645,184/79,870
6. Step 6: Final answer
   x = 451,641.98