Finding the Third Proportional to 12,761 and 28,039.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,761 : 28,039.50 = 28,039.50 : x
2. Step 2: Convert to fraction form
   12,761/28,039.50 = 28,039.50/x
3. Step 3: Cross multiply
   12,761x = 28,039.50 × 28,039.50
4. Step 4: Simplify right side
   12,761x = 786,213,560.25
5. Step 5: Solve for x
   x = 786,213,560.25/12,761
6. Step 6: Final answer
   x = 61,610.65