Finding the Third Proportional to 8,680.50 and 18,472.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,680.50 : 18,472.50 = 18,472.50 : x
2. Step 2: Convert to fraction form
   8,680.50/18,472.50 = 18,472.50/x
3. Step 3: Cross multiply
   8,680.50x = 18,472.50 × 18,472.50
4. Step 4: Simplify right side
   8,680.50x = 341,233,256.25
5. Step 5: Solve for x
   x = 341,233,256.25/8,680.50
6. Step 6: Final answer
   x = 39,310.32