Finding the Third Proportional to 13,478.91 and 27,618.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,478.91 : 27,618.47 = 27,618.47 : x
2. Step 2: Convert to fraction form
   13,478.91/27,618.47 = 27,618.47/x
3. Step 3: Cross multiply
   13,478.91x = 27,618.47 × 27,618.47
4. Step 4: Simplify right side
   13,478.91x = 762,779,816.09
5. Step 5: Solve for x
   x = 762,779,816.09/13,478.91
6. Step 6: Final answer
   x = 56,590.63