Finding the Third Proportional to 39,946.13 and 87,042.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,946.13 : 87,042.75 = 87,042.75 : x
2. Step 2: Convert to fraction form
   39,946.13/87,042.75 = 87,042.75/x
3. Step 3: Cross multiply
   39,946.13x = 87,042.75 × 87,042.75
4. Step 4: Simplify right side
   39,946.13x = 7,576,440,327.56
5. Step 5: Solve for x
   x = 7,576,440,327.56/39,946.13
6. Step 6: Final answer
   x = 189,666.47