Finding the Third Proportional to 64,840.50 and 141,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,840.50 : 141,040.50 = 141,040.50 : x
2. Step 2: Convert to fraction form
   64,840.50/141,040.50 = 141,040.50/x
3. Step 3: Cross multiply
   64,840.50x = 141,040.50 × 141,040.50
4. Step 4: Simplify right side
   64,840.50x = 19,892,422,640.25
5. Step 5: Solve for x
   x = 19,892,422,640.25/64,840.50
6. Step 6: Final answer
   x = 306,790.09