Finding the Third Proportional to 16,931.25 and 38,939.63

Step by Step Solution

1. Step 1: Write the proportion equation
   16,931.25 : 38,939.63 = 38,939.63 : x
2. Step 2: Convert to fraction form
   16,931.25/38,939.63 = 38,939.63/x
3. Step 3: Cross multiply
   16,931.25x = 38,939.63 × 38,939.63
4. Step 4: Simplify right side
   16,931.25x = 1,516,294,395.14
5. Step 5: Solve for x
   x = 1,516,294,395.14/16,931.25
6. Step 6: Final answer
   x = 89,555.96