Finding the Third Proportional to 20,385 and 30,199.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,385 : 30,199.50 = 30,199.50 : x
2. Step 2: Convert to fraction form
   20,385/30,199.50 = 30,199.50/x
3. Step 3: Cross multiply
   20,385x = 30,199.50 × 30,199.50
4. Step 4: Simplify right side
   20,385x = 912,009,800.25
5. Step 5: Solve for x
   x = 912,009,800.25/20,385
6. Step 6: Final answer
   x = 44,739.26