Finding the Third Proportional to 13,128.75 and 28,345.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,128.75 : 28,345.50 = 28,345.50 : x
2. Step 2: Convert to fraction form
   13,128.75/28,345.50 = 28,345.50/x
3. Step 3: Cross multiply
   13,128.75x = 28,345.50 × 28,345.50
4. Step 4: Simplify right side
   13,128.75x = 803,467,370.25
5. Step 5: Solve for x
   x = 803,467,370.25/13,128.75
6. Step 6: Final answer
   x = 61,199.08