Finding the Third Proportional to 10,428.75 and 13,429.13

Step by Step Solution

1. Step 1: Write the proportion equation
   10,428.75 : 13,429.13 = 13,429.13 : x
2. Step 2: Convert to fraction form
   10,428.75/13,429.13 = 13,429.13/x
3. Step 3: Cross multiply
   10,428.75x = 13,429.13 × 13,429.13
4. Step 4: Simplify right side
   10,428.75x = 180,341,398.27
5. Step 5: Solve for x
   x = 180,341,398.27/10,428.75
6. Step 6: Final answer
   x = 17,292.71