Finding the Third Proportional to 13,915.55 and 15,829.17

Step by Step Solution

1. Step 1: Write the proportion equation
   13,915.55 : 15,829.17 = 15,829.17 : x
2. Step 2: Convert to fraction form
   13,915.55/15,829.17 = 15,829.17/x
3. Step 3: Cross multiply
   13,915.55x = 15,829.17 × 15,829.17
4. Step 4: Simplify right side
   13,915.55x = 250,562,682.25
5. Step 5: Solve for x
   x = 250,562,682.25/13,915.55
6. Step 6: Final answer
   x = 18,005.95