Finding the Third Proportional to 13,158 and 17,070.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,158 : 17,070.75 = 17,070.75 : x
2. Step 2: Convert to fraction form
   13,158/17,070.75 = 17,070.75/x
3. Step 3: Cross multiply
   13,158x = 17,070.75 × 17,070.75
4. Step 4: Simplify right side
   13,158x = 291,410,505.56
5. Step 5: Solve for x
   x = 291,410,505.56/13,158
6. Step 6: Final answer
   x = 22,147.02