Finding the Third Proportional to 97,128 and 131,231.25

Step by Step Solution

1. Step 1: Write the proportion equation
   97,128 : 131,231.25 = 131,231.25 : x
2. Step 2: Convert to fraction form
   97,128/131,231.25 = 131,231.25/x
3. Step 3: Cross multiply
   97,128x = 131,231.25 × 131,231.25
4. Step 4: Simplify right side
   97,128x = 17,221,640,976.56
5. Step 5: Solve for x
   x = 17,221,640,976.56/97,128
6. Step 6: Final answer
   x = 177,308.72