Finding the Third Proportional to 6,810.75 and 12,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,810.75 : 12,061.50 = 12,061.50 : x
2. Step 2: Convert to fraction form
   6,810.75/12,061.50 = 12,061.50/x
3. Step 3: Cross multiply
   6,810.75x = 12,061.50 × 12,061.50
4. Step 4: Simplify right side
   6,810.75x = 145,479,782.25
5. Step 5: Solve for x
   x = 145,479,782.25/6,810.75
6. Step 6: Final answer
   x = 21,360.32