Finding the Third Proportional to 40,509 and 87,066

Step by Step Solution

1. Step 1: Write the proportion equation
   40,509 : 87,066 = 87,066 : x
2. Step 2: Convert to fraction form
   40,509/87,066 = 87,066/x
3. Step 3: Cross multiply
   40,509x = 87,066 × 87,066
4. Step 4: Simplify right side
   40,509x = 7,580,488,356
5. Step 5: Solve for x
   x = 7,580,488,356/40,509
6. Step 6: Final answer
   x = 187,130.97