Finding the Third Proportional to 2,645.25 and 5,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645.25 : 5,812.50 = 5,812.50 : x
2. Step 2: Convert to fraction form
   2,645.25/5,812.50 = 5,812.50/x
3. Step 3: Cross multiply
   2,645.25x = 5,812.50 × 5,812.50
4. Step 4: Simplify right side
   2,645.25x = 33,785,156.25
5. Step 5: Solve for x
   x = 33,785,156.25/2,645.25
6. Step 6: Final answer
   x = 12,772.01