Finding the Third Proportional to 6,213 and 8,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,213 : 8,851.50 = 8,851.50 : x
2. Step 2: Convert to fraction form
   6,213/8,851.50 = 8,851.50/x
3. Step 3: Cross multiply
   6,213x = 8,851.50 × 8,851.50
4. Step 4: Simplify right side
   6,213x = 78,349,052.25
5. Step 5: Solve for x
   x = 78,349,052.25/6,213
6. Step 6: Final answer
   x = 12,610.50