Finding the Third Proportional to 40,031.25 and 87,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,031.25 : 87,109.50 = 87,109.50 : x
2. Step 2: Convert to fraction form
   40,031.25/87,109.50 = 87,109.50/x
3. Step 3: Cross multiply
   40,031.25x = 87,109.50 × 87,109.50
4. Step 4: Simplify right side
   40,031.25x = 7,588,064,990.25
5. Step 5: Solve for x
   x = 7,588,064,990.25/40,031.25
6. Step 6: Final answer
   x = 189,553.54