Finding the Third Proportional to 65,800.50 and 144,719

Step by Step Solution

1. Step 1: Write the proportion equation
   65,800.50 : 144,719 = 144,719 : x
2. Step 2: Convert to fraction form
   65,800.50/144,719 = 144,719/x
3. Step 3: Cross multiply
   65,800.50x = 144,719 × 144,719
4. Step 4: Simplify right side
   65,800.50x = 20,943,588,961
5. Step 5: Solve for x
   x = 20,943,588,961/65,800.50
6. Step 6: Final answer
   x = 318,289.21