Finding the Third Proportional to 13,591.86 and 20,374.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,591.86 : 20,374.98 = 20,374.98 : x
2. Step 2: Convert to fraction form
   13,591.86/20,374.98 = 20,374.98/x
3. Step 3: Cross multiply
   13,591.86x = 20,374.98 × 20,374.98
4. Step 4: Simplify right side
   13,591.86x = 415,139,829.10
5. Step 5: Solve for x
   x = 415,139,829.10/13,591.86
6. Step 6: Final answer
   x = 30,543.26