Finding the Third Proportional to 17,661 and 37,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,661 : 37,387.50 = 37,387.50 : x
2. Step 2: Convert to fraction form
   17,661/37,387.50 = 37,387.50/x
3. Step 3: Cross multiply
   17,661x = 37,387.50 × 37,387.50
4. Step 4: Simplify right side
   17,661x = 1,397,825,156.25
5. Step 5: Solve for x
   x = 1,397,825,156.25/17,661
6. Step 6: Final answer
   x = 79,147.57