Finding the Third Proportional to 38,839.50 and 87,687.56

Step by Step Solution

1. Step 1: Write the proportion equation
   38,839.50 : 87,687.56 = 87,687.56 : x
2. Step 2: Convert to fraction form
   38,839.50/87,687.56 = 87,687.56/x
3. Step 3: Cross multiply
   38,839.50x = 87,687.56 × 87,687.56
4. Step 4: Simplify right side
   38,839.50x = 7,689,108,617.19
5. Step 5: Solve for x
   x = 7,689,108,617.19/38,839.50
6. Step 6: Final answer
   x = 197,971.36