Finding the Third Proportional to 12,145.50 and 26,869.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,145.50 : 26,869.50 = 26,869.50 : x
2. Step 2: Convert to fraction form
   12,145.50/26,869.50 = 26,869.50/x
3. Step 3: Cross multiply
   12,145.50x = 26,869.50 × 26,869.50
4. Step 4: Simplify right side
   12,145.50x = 721,970,030.25
5. Step 5: Solve for x
   x = 721,970,030.25/12,145.50
6. Step 6: Final answer
   x = 59,443.42