Finding the Third Proportional to 12,130.31 and 18,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,130.31 : 18,400.50 = 18,400.50 : x
2. Step 2: Convert to fraction form
   12,130.31/18,400.50 = 18,400.50/x
3. Step 3: Cross multiply
   12,130.31x = 18,400.50 × 18,400.50
4. Step 4: Simplify right side
   12,130.31x = 338,578,400.25
5. Step 5: Solve for x
   x = 338,578,400.25/12,130.31
6. Step 6: Final answer
   x = 27,911.76