Finding the Third Proportional to 12,817.50 and 19,773

Step by Step Solution

1. Step 1: Write the proportion equation
   12,817.50 : 19,773 = 19,773 : x
2. Step 2: Convert to fraction form
   12,817.50/19,773 = 19,773/x
3. Step 3: Cross multiply
   12,817.50x = 19,773 × 19,773
4. Step 4: Simplify right side
   12,817.50x = 390,971,529
5. Step 5: Solve for x
   x = 390,971,529/12,817.50
6. Step 6: Final answer
   x = 30,502.95