Finding the Third Proportional to 40,032 and 87,111

Step by Step Solution

1. Step 1: Write the proportion equation
   40,032 : 87,111 = 87,111 : x
2. Step 2: Convert to fraction form
   40,032/87,111 = 87,111/x
3. Step 3: Cross multiply
   40,032x = 87,111 × 87,111
4. Step 4: Simplify right side
   40,032x = 7,588,326,321
5. Step 5: Solve for x
   x = 7,588,326,321/40,032
6. Step 6: Final answer
   x = 189,556.51