Finding the Third Proportional to 71,749.50 and 100,309.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,749.50 : 100,309.50 = 100,309.50 : x
2. Step 2: Convert to fraction form
   71,749.50/100,309.50 = 100,309.50/x
3. Step 3: Cross multiply
   71,749.50x = 100,309.50 × 100,309.50
4. Step 4: Simplify right side
   71,749.50x = 10,061,995,790.25
5. Step 5: Solve for x
   x = 10,061,995,790.25/71,749.50
6. Step 6: Final answer
   x = 140,237.85