Finding the Third Proportional to 40,698.75 and 87,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,698.75 : 87,238.50 = 87,238.50 : x
2. Step 2: Convert to fraction form
   40,698.75/87,238.50 = 87,238.50/x
3. Step 3: Cross multiply
   40,698.75x = 87,238.50 × 87,238.50
4. Step 4: Simplify right side
   40,698.75x = 7,610,555,882.25
5. Step 5: Solve for x
   x = 7,610,555,882.25/40,698.75
6. Step 6: Final answer
   x = 186,997.29