Finding the Third Proportional to 9,311.63 and 13,312.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,311.63 : 13,312.69 = 13,312.69 : x
2. Step 2: Convert to fraction form
   9,311.63/13,312.69 = 13,312.69/x
3. Step 3: Cross multiply
   9,311.63x = 13,312.69 × 13,312.69
4. Step 4: Simplify right side
   9,311.63x = 177,227,648.47
5. Step 5: Solve for x
   x = 177,227,648.47/9,311.63
6. Step 6: Final answer
   x = 19,032.95