Finding the Third Proportional to 39,573.43 and 86,536.40

Step by Step Solution

1. Step 1: Write the proportion equation
   39,573.43 : 86,536.40 = 86,536.40 : x
2. Step 2: Convert to fraction form
   39,573.43/86,536.40 = 86,536.40/x
3. Step 3: Cross multiply
   39,573.43x = 86,536.40 × 86,536.40
4. Step 4: Simplify right side
   39,573.43x = 7,488,548,941.16
5. Step 5: Solve for x
   x = 7,488,548,941.16/39,573.43
6. Step 6: Final answer
   x = 189,231.72