Finding the Third Proportional to 11,220 and 17,601.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,220 : 17,601.50 = 17,601.50 : x
2. Step 2: Convert to fraction form
   11,220/17,601.50 = 17,601.50/x
3. Step 3: Cross multiply
   11,220x = 17,601.50 × 17,601.50
4. Step 4: Simplify right side
   11,220x = 309,812,802.25
5. Step 5: Solve for x
   x = 309,812,802.25/11,220
6. Step 6: Final answer
   x = 27,612.55