Finding the Third Proportional to 57,258 and 86,514.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,258 : 86,514.75 = 86,514.75 : x
2. Step 2: Convert to fraction form
   57,258/86,514.75 = 86,514.75/x
3. Step 3: Cross multiply
   57,258x = 86,514.75 × 86,514.75
4. Step 4: Simplify right side
   57,258x = 7,484,801,967.56
5. Step 5: Solve for x
   x = 7,484,801,967.56/57,258
6. Step 6: Final answer
   x = 130,720.63