Finding the Third Proportional to 9,900 and 22,381.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,900 : 22,381.50 = 22,381.50 : x
2. Step 2: Convert to fraction form
   9,900/22,381.50 = 22,381.50/x
3. Step 3: Cross multiply
   9,900x = 22,381.50 × 22,381.50
4. Step 4: Simplify right side
   9,900x = 500,931,542.25
5. Step 5: Solve for x
   x = 500,931,542.25/9,900
6. Step 6: Final answer
   x = 50,599.15