Finding the Third Proportional to 40,312 and 87,530

Step by Step Solution

1. Step 1: Write the proportion equation
   40,312 : 87,530 = 87,530 : x
2. Step 2: Convert to fraction form
   40,312/87,530 = 87,530/x
3. Step 3: Cross multiply
   40,312x = 87,530 × 87,530
4. Step 4: Simplify right side
   40,312x = 7,661,500,900
5. Step 5: Solve for x
   x = 7,661,500,900/40,312
6. Step 6: Final answer
   x = 190,055.09