Finding the Third Proportional to 2,784.38 and 3,988.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.38 : 3,988.69 = 3,988.69 : x
2. Step 2: Convert to fraction form
   2,784.38/3,988.69 = 3,988.69/x
3. Step 3: Cross multiply
   2,784.38x = 3,988.69 × 3,988.69
4. Step 4: Simplify right side
   2,784.38x = 15,909,627.97
5. Step 5: Solve for x
   x = 15,909,627.97/2,784.38
6. Step 6: Final answer
   x = 5,713.90