Finding the Third Proportional to 274,100.50 and 421,852

Step by Step Solution

1. Step 1: Write the proportion equation
   274,100.50 : 421,852 = 421,852 : x
2. Step 2: Convert to fraction form
   274,100.50/421,852 = 421,852/x
3. Step 3: Cross multiply
   274,100.50x = 421,852 × 421,852
4. Step 4: Simplify right side
   274,100.50x = 177,959,109,904
5. Step 5: Solve for x
   x = 177,959,109,904/274,100.50
6. Step 6: Final answer
   x = 649,247.67