Finding the Third Proportional to 7,990.31 and 17,538.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,990.31 : 17,538.61 = 17,538.61 : x
2. Step 2: Convert to fraction form
   7,990.31/17,538.61 = 17,538.61/x
3. Step 3: Cross multiply
   7,990.31x = 17,538.61 × 17,538.61
4. Step 4: Simplify right side
   7,990.31x = 307,602,818.81
5. Step 5: Solve for x
   x = 307,602,818.81/7,990.31
6. Step 6: Final answer
   x = 38,496.97