Finding the Third Proportional to 15,189.19 and 31,588.31

Step by Step Solution

1. Step 1: Write the proportion equation
   15,189.19 : 31,588.31 = 31,588.31 : x
2. Step 2: Convert to fraction form
   15,189.19/31,588.31 = 31,588.31/x
3. Step 3: Cross multiply
   15,189.19x = 31,588.31 × 31,588.31
4. Step 4: Simplify right side
   15,189.19x = 997,821,486.60
5. Step 5: Solve for x
   x = 997,821,486.60/15,189.19
6. Step 6: Final answer
   x = 65,692.88