Finding the Third Proportional to 17,921.50 and 35,401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,921.50 : 35,401.50 = 35,401.50 : x
2. Step 2: Convert to fraction form
   17,921.50/35,401.50 = 35,401.50/x
3. Step 3: Cross multiply
   17,921.50x = 35,401.50 × 35,401.50
4. Step 4: Simplify right side
   17,921.50x = 1,253,266,202.25
5. Step 5: Solve for x
   x = 1,253,266,202.25/17,921.50
6. Step 6: Final answer
   x = 69,930.88