Finding the Third Proportional to 65,263.50 and 142,510.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,263.50 : 142,510.50 = 142,510.50 : x
2. Step 2: Convert to fraction form
   65,263.50/142,510.50 = 142,510.50/x
3. Step 3: Cross multiply
   65,263.50x = 142,510.50 × 142,510.50
4. Step 4: Simplify right side
   65,263.50x = 20,309,242,610.25
5. Step 5: Solve for x
   x = 20,309,242,610.25/65,263.50
6. Step 6: Final answer
   x = 311,188.38