Finding the Third Proportional to 64,405.50 and 140,253

Step by Step Solution

1. Step 1: Write the proportion equation
   64,405.50 : 140,253 = 140,253 : x
2. Step 2: Convert to fraction form
   64,405.50/140,253 = 140,253/x
3. Step 3: Cross multiply
   64,405.50x = 140,253 × 140,253
4. Step 4: Simplify right side
   64,405.50x = 19,670,904,009
5. Step 5: Solve for x
   x = 19,670,904,009/64,405.50
6. Step 6: Final answer
   x = 305,422.74