Finding the Third Proportional to 17,688.38 and 38,657.25

Step by Step Solution

1. Step 1: Write the proportion equation
   17,688.38 : 38,657.25 = 38,657.25 : x
2. Step 2: Convert to fraction form
   17,688.38/38,657.25 = 38,657.25/x
3. Step 3: Cross multiply
   17,688.38x = 38,657.25 × 38,657.25
4. Step 4: Simplify right side
   17,688.38x = 1,494,382,977.56
5. Step 5: Solve for x
   x = 1,494,382,977.56/17,688.38
6. Step 6: Final answer
   x = 84,483.90