Finding the Third Proportional to 12,620.25 and 27,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,620.25 : 27,688.50 = 27,688.50 : x
2. Step 2: Convert to fraction form
   12,620.25/27,688.50 = 27,688.50/x
3. Step 3: Cross multiply
   12,620.25x = 27,688.50 × 27,688.50
4. Step 4: Simplify right side
   12,620.25x = 766,653,032.25
5. Step 5: Solve for x
   x = 766,653,032.25/12,620.25
6. Step 6: Final answer
   x = 60,747.85