Finding the Third Proportional to 65,478.75 and 142,951.88

Step by Step Solution

1. Step 1: Write the proportion equation
   65,478.75 : 142,951.88 = 142,951.88 : x
2. Step 2: Convert to fraction form
   65,478.75/142,951.88 = 142,951.88/x
3. Step 3: Cross multiply
   65,478.75x = 142,951.88 × 142,951.88
4. Step 4: Simplify right side
   65,478.75x = 20,435,238,566.02
5. Step 5: Solve for x
   x = 20,435,238,566.02/65,478.75
6. Step 6: Final answer
   x = 312,089.63