Finding the Third Proportional to 8,364.38 and 12,547.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,364.38 : 12,547.69 = 12,547.69 : x
2. Step 2: Convert to fraction form
   8,364.38/12,547.69 = 12,547.69/x
3. Step 3: Cross multiply
   8,364.38x = 12,547.69 × 12,547.69
4. Step 4: Simplify right side
   8,364.38x = 157,444,461.60
5. Step 5: Solve for x
   x = 157,444,461.60/8,364.38
6. Step 6: Final answer
   x = 18,823.22