Finding the Third Proportional to 13,650 and 20,869.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,650 : 20,869.50 = 20,869.50 : x
2. Step 2: Convert to fraction form
   13,650/20,869.50 = 20,869.50/x
3. Step 3: Cross multiply
   13,650x = 20,869.50 × 20,869.50
4. Step 4: Simplify right side
   13,650x = 435,536,030.25
5. Step 5: Solve for x
   x = 435,536,030.25/13,650
6. Step 6: Final answer
   x = 31,907.40