Finding the Third Proportional to 19,389 and 30,751.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,389 : 30,751.50 = 30,751.50 : x
2. Step 2: Convert to fraction form
   19,389/30,751.50 = 30,751.50/x
3. Step 3: Cross multiply
   19,389x = 30,751.50 × 30,751.50
4. Step 4: Simplify right side
   19,389x = 945,654,752.25
5. Step 5: Solve for x
   x = 945,654,752.25/19,389
6. Step 6: Final answer
   x = 48,772.74