Finding the Third Proportional to 6,618.75 and 13,784.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,618.75 : 13,784.25 = 13,784.25 : x
2. Step 2: Convert to fraction form
   6,618.75/13,784.25 = 13,784.25/x
3. Step 3: Cross multiply
   6,618.75x = 13,784.25 × 13,784.25
4. Step 4: Simplify right side
   6,618.75x = 190,005,548.06
5. Step 5: Solve for x
   x = 190,005,548.06/6,618.75
6. Step 6: Final answer
   x = 28,707.16