Finding the Third Proportional to 16,420.50 and 34,008.75

Step by Step Solution

1. Step 1: Write the proportion equation
   16,420.50 : 34,008.75 = 34,008.75 : x
2. Step 2: Convert to fraction form
   16,420.50/34,008.75 = 34,008.75/x
3. Step 3: Cross multiply
   16,420.50x = 34,008.75 × 34,008.75
4. Step 4: Simplify right side
   16,420.50x = 1,156,595,076.56
5. Step 5: Solve for x
   x = 1,156,595,076.56/16,420.50
6. Step 6: Final answer
   x = 70,436.04