Finding the Third Proportional to 65,272 and 143,153

Step by Step Solution

1. Step 1: Write the proportion equation
   65,272 : 143,153 = 143,153 : x
2. Step 2: Convert to fraction form
   65,272/143,153 = 143,153/x
3. Step 3: Cross multiply
   65,272x = 143,153 × 143,153
4. Step 4: Simplify right side
   65,272x = 20,492,781,409
5. Step 5: Solve for x
   x = 20,492,781,409/65,272
6. Step 6: Final answer
   x = 313,959.76