Finding the Third Proportional to 16,686 and 45,427.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,686 : 45,427.50 = 45,427.50 : x
2. Step 2: Convert to fraction form
   16,686/45,427.50 = 45,427.50/x
3. Step 3: Cross multiply
   16,686x = 45,427.50 × 45,427.50
4. Step 4: Simplify right side
   16,686x = 2,063,657,756.25
5. Step 5: Solve for x
   x = 2,063,657,756.25/16,686
6. Step 6: Final answer
   x = 123,676.00