Finding the Third Proportional to 12,788 and 17,066

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788 : 17,066 = 17,066 : x
2. Step 2: Convert to fraction form
   12,788/17,066 = 17,066/x
3. Step 3: Cross multiply
   12,788x = 17,066 × 17,066
4. Step 4: Simplify right side
   12,788x = 291,248,356
5. Step 5: Solve for x
   x = 291,248,356/12,788
6. Step 6: Final answer
   x = 22,775.13