Finding the Third Proportional to 9,213 and 12,007.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,213 : 12,007.50 = 12,007.50 : x
2. Step 2: Convert to fraction form
   9,213/12,007.50 = 12,007.50/x
3. Step 3: Cross multiply
   9,213x = 12,007.50 × 12,007.50
4. Step 4: Simplify right side
   9,213x = 144,180,056.25
5. Step 5: Solve for x
   x = 144,180,056.25/9,213
6. Step 6: Final answer
   x = 15,649.63