Finding the Third Proportional to 16,915.50 and 38,985.75

Step by Step Solution

1. Step 1: Write the proportion equation
   16,915.50 : 38,985.75 = 38,985.75 : x
2. Step 2: Convert to fraction form
   16,915.50/38,985.75 = 38,985.75/x
3. Step 3: Cross multiply
   16,915.50x = 38,985.75 × 38,985.75
4. Step 4: Simplify right side
   16,915.50x = 1,519,888,703.06
5. Step 5: Solve for x
   x = 1,519,888,703.06/16,915.50
6. Step 6: Final answer
   x = 89,851.83