Finding the Third Proportional to 65,638.69 and 98,458.88

Step by Step Solution

1. Step 1: Write the proportion equation
   65,638.69 : 98,458.88 = 98,458.88 : x
2. Step 2: Convert to fraction form
   65,638.69/98,458.88 = 98,458.88/x
3. Step 3: Cross multiply
   65,638.69x = 98,458.88 × 98,458.88
4. Step 4: Simplify right side
   65,638.69x = 9,694,150,066.27
5. Step 5: Solve for x
   x = 9,694,150,066.27/65,638.69
6. Step 6: Final answer
   x = 147,689.58