Finding the Third Proportional to 17,890.88 and 38,778.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,890.88 : 38,778.75 = 38,778.75 : x
2. Step 2: Convert to fraction form
   17,890.88/38,778.75 = 38,778.75/x
3. Step 3: Cross multiply
   17,890.88x = 38,778.75 × 38,778.75
4. Step 4: Simplify right side
   17,890.88x = 1,503,791,451.56
5. Step 5: Solve for x
   x = 1,503,791,451.56/17,890.88
6. Step 6: Final answer
   x = 84,053.54