Finding the Third Proportional to 17,680.50 and 38,428.88

Step by Step Solution

1. Step 1: Write the proportion equation
   17,680.50 : 38,428.88 = 38,428.88 : x
2. Step 2: Convert to fraction form
   17,680.50/38,428.88 = 38,428.88/x
3. Step 3: Cross multiply
   17,680.50x = 38,428.88 × 38,428.88
4. Step 4: Simplify right side
   17,680.50x = 1,476,778,433.77
5. Step 5: Solve for x
   x = 1,476,778,433.77/17,680.50
6. Step 6: Final answer
   x = 83,525.83