Finding the Third Proportional to 66,300 and 144,264

Step by Step Solution

1. Step 1: Write the proportion equation
   66,300 : 144,264 = 144,264 : x
2. Step 2: Convert to fraction form
   66,300/144,264 = 144,264/x
3. Step 3: Cross multiply
   66,300x = 144,264 × 144,264
4. Step 4: Simplify right side
   66,300x = 20,812,101,696
5. Step 5: Solve for x
   x = 20,812,101,696/66,300
6. Step 6: Final answer
   x = 313,908.02