Finding the Third Proportional to 19,918.50 and 30,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,918.50 : 30,031.50 = 30,031.50 : x
2. Step 2: Convert to fraction form
   19,918.50/30,031.50 = 30,031.50/x
3. Step 3: Cross multiply
   19,918.50x = 30,031.50 × 30,031.50
4. Step 4: Simplify right side
   19,918.50x = 901,890,992.25
5. Step 5: Solve for x
   x = 901,890,992.25/19,918.50
6. Step 6: Final answer
   x = 45,279.06