Finding the Third Proportional to 17,212.50 and 36,814.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,212.50 : 36,814.50 = 36,814.50 : x
2. Step 2: Convert to fraction form
   17,212.50/36,814.50 = 36,814.50/x
3. Step 3: Cross multiply
   17,212.50x = 36,814.50 × 36,814.50
4. Step 4: Simplify right side
   17,212.50x = 1,355,307,410.25
5. Step 5: Solve for x
   x = 1,355,307,410.25/17,212.50
6. Step 6: Final answer
   x = 78,739.72