Finding the Third Proportional to 66,483 and 144,870

Step by Step Solution

1. Step 1: Write the proportion equation
   66,483 : 144,870 = 144,870 : x
2. Step 2: Convert to fraction form
   66,483/144,870 = 144,870/x
3. Step 3: Cross multiply
   66,483x = 144,870 × 144,870
4. Step 4: Simplify right side
   66,483x = 20,987,316,900
5. Step 5: Solve for x
   x = 20,987,316,900/66,483
6. Step 6: Final answer
   x = 315,679.45