Finding the Third Proportional to 15,636.88 and 31,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,636.88 : 31,910.50 = 31,910.50 : x
2. Step 2: Convert to fraction form
   15,636.88/31,910.50 = 31,910.50/x
3. Step 3: Cross multiply
   15,636.88x = 31,910.50 × 31,910.50
4. Step 4: Simplify right side
   15,636.88x = 1,018,280,010.25
5. Step 5: Solve for x
   x = 1,018,280,010.25/15,636.88
6. Step 6: Final answer
   x = 65,120.43