Finding the Third Proportional to 40,455 and 87,786

Step by Step Solution

1. Step 1: Write the proportion equation
   40,455 : 87,786 = 87,786 : x
2. Step 2: Convert to fraction form
   40,455/87,786 = 87,786/x
3. Step 3: Cross multiply
   40,455x = 87,786 × 87,786
4. Step 4: Simplify right side
   40,455x = 7,706,381,796
5. Step 5: Solve for x
   x = 7,706,381,796/40,455
6. Step 6: Final answer
   x = 190,492.69