Finding the Third Proportional to 8,810.63 and 12,972.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,810.63 : 12,972.56 = 12,972.56 : x
2. Step 2: Convert to fraction form
   8,810.63/12,972.56 = 12,972.56/x
3. Step 3: Cross multiply
   8,810.63x = 12,972.56 × 12,972.56
4. Step 4: Simplify right side
   8,810.63x = 168,287,377.82
5. Step 5: Solve for x
   x = 168,287,377.82/8,810.63
6. Step 6: Final answer
   x = 19,100.50