Finding the Third Proportional to 12,784.50 and 19,186.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,784.50 : 19,186.88 = 19,186.88 : x
2. Step 2: Convert to fraction form
   12,784.50/19,186.88 = 19,186.88/x
3. Step 3: Cross multiply
   12,784.50x = 19,186.88 × 19,186.88
4. Step 4: Simplify right side
   12,784.50x = 368,136,172.27
5. Step 5: Solve for x
   x = 368,136,172.27/12,784.50
6. Step 6: Final answer
   x = 28,795.51