Finding the Third Proportional to 86,499.75 and 116,388.75

Step by Step Solution

1. Step 1: Write the proportion equation
   86,499.75 : 116,388.75 = 116,388.75 : x
2. Step 2: Convert to fraction form
   86,499.75/116,388.75 = 116,388.75/x
3. Step 3: Cross multiply
   86,499.75x = 116,388.75 × 116,388.75
4. Step 4: Simplify right side
   86,499.75x = 13,546,341,126.56
5. Step 5: Solve for x
   x = 13,546,341,126.56/86,499.75
6. Step 6: Final answer
   x = 156,605.55