Finding the Third Proportional to 17,645.50 and 38,469.79

Step by Step Solution

1. Step 1: Write the proportion equation
   17,645.50 : 38,469.79 = 38,469.79 : x
2. Step 2: Convert to fraction form
   17,645.50/38,469.79 = 38,469.79/x
3. Step 3: Cross multiply
   17,645.50x = 38,469.79 × 38,469.79
4. Step 4: Simplify right side
   17,645.50x = 1,479,924,679.91
5. Step 5: Solve for x
   x = 1,479,924,679.91/17,645.50
6. Step 6: Final answer
   x = 83,869.80