Finding the Third Proportional to 4,080.38 and 8,692.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,080.38 : 8,692.31 = 8,692.31 : x
2. Step 2: Convert to fraction form
   4,080.38/8,692.31 = 8,692.31/x
3. Step 3: Cross multiply
   4,080.38x = 8,692.31 × 8,692.31
4. Step 4: Simplify right side
   4,080.38x = 75,556,296.60
5. Step 5: Solve for x
   x = 75,556,296.60/4,080.38
6. Step 6: Final answer
   x = 18,517.00