Finding the Third Proportional to 17,631.75 and 36,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,631.75 : 36,721.50 = 36,721.50 : x
2. Step 2: Convert to fraction form
   17,631.75/36,721.50 = 36,721.50/x
3. Step 3: Cross multiply
   17,631.75x = 36,721.50 × 36,721.50
4. Step 4: Simplify right side
   17,631.75x = 1,348,468,562.25
5. Step 5: Solve for x
   x = 1,348,468,562.25/17,631.75
6. Step 6: Final answer
   x = 76,479.56