Finding the Third Proportional to 10,688 and 14,070

Step by Step Solution

1. Step 1: Write the proportion equation
   10,688 : 14,070 = 14,070 : x
2. Step 2: Convert to fraction form
   10,688/14,070 = 14,070/x
3. Step 3: Cross multiply
   10,688x = 14,070 × 14,070
4. Step 4: Simplify right side
   10,688x = 197,964,900
5. Step 5: Solve for x
   x = 197,964,900/10,688
6. Step 6: Final answer
   x = 18,522.17