Finding the Third Proportional to 13,146.89 and 20,395.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,146.89 : 20,395.69 = 20,395.69 : x
2. Step 2: Convert to fraction form
   13,146.89/20,395.69 = 20,395.69/x
3. Step 3: Cross multiply
   13,146.89x = 20,395.69 × 20,395.69
4. Step 4: Simplify right side
   13,146.89x = 415,984,068.60
5. Step 5: Solve for x
   x = 415,984,068.60/13,146.89
6. Step 6: Final answer
   x = 31,641.25