Finding the Third Proportional to 39,396.38 and 86,442.19

Step by Step Solution

1. Step 1: Write the proportion equation
   39,396.38 : 86,442.19 = 86,442.19 : x
2. Step 2: Convert to fraction form
   39,396.38/86,442.19 = 86,442.19/x
3. Step 3: Cross multiply
   39,396.38x = 86,442.19 × 86,442.19
4. Step 4: Simplify right side
   39,396.38x = 7,472,251,779.79
5. Step 5: Solve for x
   x = 7,472,251,779.79/39,396.38
6. Step 6: Final answer
   x = 189,668.51