Finding the Third Proportional to 13,591.55 and 20,792.95

Step by Step Solution

1. Step 1: Write the proportion equation
   13,591.55 : 20,792.95 = 20,792.95 : x
2. Step 2: Convert to fraction form
   13,591.55/20,792.95 = 20,792.95/x
3. Step 3: Cross multiply
   13,591.55x = 20,792.95 × 20,792.95
4. Step 4: Simplify right side
   13,591.55x = 432,346,899.66
5. Step 5: Solve for x
   x = 432,346,899.66/13,591.55
6. Step 6: Final answer
   x = 31,809.98