Finding the Third Proportional to 8,917.50 and 21,088.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,917.50 : 21,088.88 = 21,088.88 : x
2. Step 2: Convert to fraction form
   8,917.50/21,088.88 = 21,088.88/x
3. Step 3: Cross multiply
   8,917.50x = 21,088.88 × 21,088.88
4. Step 4: Simplify right side
   8,917.50x = 444,740,648.77
5. Step 5: Solve for x
   x = 444,740,648.77/8,917.50
6. Step 6: Final answer
   x = 49,872.79