Finding the Third Proportional to 17,780 and 36,988

Step by Step Solution

1. Step 1: Write the proportion equation
   17,780 : 36,988 = 36,988 : x
2. Step 2: Convert to fraction form
   17,780/36,988 = 36,988/x
3. Step 3: Cross multiply
   17,780x = 36,988 × 36,988
4. Step 4: Simplify right side
   17,780x = 1,368,112,144
5. Step 5: Solve for x
   x = 1,368,112,144/17,780
6. Step 6: Final answer
   x = 76,946.69