Finding the Third Proportional to 86,147.30 and 111,451.57

Step by Step Solution

1. Step 1: Write the proportion equation
   86,147.30 : 111,451.57 = 111,451.57 : x
2. Step 2: Convert to fraction form
   86,147.30/111,451.57 = 111,451.57/x
3. Step 3: Cross multiply
   86,147.30x = 111,451.57 × 111,451.57
4. Step 4: Simplify right side
   86,147.30x = 12,421,452,525.12
5. Step 5: Solve for x
   x = 12,421,452,525.12/86,147.30
6. Step 6: Final answer
   x = 144,188.53