Finding the Third Proportional to 11,513.31 and 18,307.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,513.31 : 18,307.98 = 18,307.98 : x
2. Step 2: Convert to fraction form
   11,513.31/18,307.98 = 18,307.98/x
3. Step 3: Cross multiply
   11,513.31x = 18,307.98 × 18,307.98
4. Step 4: Simplify right side
   11,513.31x = 335,182,041.57
5. Step 5: Solve for x
   x = 335,182,041.57/11,513.31
6. Step 6: Final answer
   x = 29,112.57