Finding the Third Proportional to 65,653.50 and 143,186

Step by Step Solution

1. Step 1: Write the proportion equation
   65,653.50 : 143,186 = 143,186 : x
2. Step 2: Convert to fraction form
   65,653.50/143,186 = 143,186/x
3. Step 3: Cross multiply
   65,653.50x = 143,186 × 143,186
4. Step 4: Simplify right side
   65,653.50x = 20,502,230,596
5. Step 5: Solve for x
   x = 20,502,230,596/65,653.50
6. Step 6: Final answer
   x = 312,279.32