Finding the Third Proportional to 16,820.50 and 35,691

Step by Step Solution

1. Step 1: Write the proportion equation
   16,820.50 : 35,691 = 35,691 : x
2. Step 2: Convert to fraction form
   16,820.50/35,691 = 35,691/x
3. Step 3: Cross multiply
   16,820.50x = 35,691 × 35,691
4. Step 4: Simplify right side
   16,820.50x = 1,273,847,481
5. Step 5: Solve for x
   x = 1,273,847,481/16,820.50
6. Step 6: Final answer
   x = 75,731.84