Finding the Third Proportional to 65,571 and 142,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,571 : 142,156.50 = 142,156.50 : x
2. Step 2: Convert to fraction form
   65,571/142,156.50 = 142,156.50/x
3. Step 3: Cross multiply
   65,571x = 142,156.50 × 142,156.50
4. Step 4: Simplify right side
   65,571x = 20,208,470,492.25
5. Step 5: Solve for x
   x = 20,208,470,492.25/65,571
6. Step 6: Final answer
   x = 308,192.20