Finding the Third Proportional to 64,891.50 and 140,798.25

Step by Step Solution

1. Step 1: Write the proportion equation
   64,891.50 : 140,798.25 = 140,798.25 : x
2. Step 2: Convert to fraction form
   64,891.50/140,798.25 = 140,798.25/x
3. Step 3: Cross multiply
   64,891.50x = 140,798.25 × 140,798.25
4. Step 4: Simplify right side
   64,891.50x = 19,824,147,203.06
5. Step 5: Solve for x
   x = 19,824,147,203.06/64,891.50
6. Step 6: Final answer
   x = 305,496.82