Finding the Third Proportional to 39,819 and 55,810.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,819 : 55,810.50 = 55,810.50 : x
2. Step 2: Convert to fraction form
   39,819/55,810.50 = 55,810.50/x
3. Step 3: Cross multiply
   39,819x = 55,810.50 × 55,810.50
4. Step 4: Simplify right side
   39,819x = 3,114,811,910.25
5. Step 5: Solve for x
   x = 3,114,811,910.25/39,819
6. Step 6: Final answer
   x = 78,224.26