Finding the Third Proportional to 65,558.50 and 143,753

Step by Step Solution

1. Step 1: Write the proportion equation
   65,558.50 : 143,753 = 143,753 : x
2. Step 2: Convert to fraction form
   65,558.50/143,753 = 143,753/x
3. Step 3: Cross multiply
   65,558.50x = 143,753 × 143,753
4. Step 4: Simplify right side
   65,558.50x = 20,664,925,009
5. Step 5: Solve for x
   x = 20,664,925,009/65,558.50
6. Step 6: Final answer
   x = 315,213.51