Finding the Third Proportional to 65,588 and 143,488

Step by Step Solution

1. Step 1: Write the proportion equation
   65,588 : 143,488 = 143,488 : x
2. Step 2: Convert to fraction form
   65,588/143,488 = 143,488/x
3. Step 3: Cross multiply
   65,588x = 143,488 × 143,488
4. Step 4: Simplify right side
   65,588x = 20,588,806,144
5. Step 5: Solve for x
   x = 20,588,806,144/65,588
6. Step 6: Final answer
   x = 313,911.17