Finding the Third Proportional to 7,290.84 and 15,978.94

Step by Step Solution

1. Step 1: Write the proportion equation
   7,290.84 : 15,978.94 = 15,978.94 : x
2. Step 2: Convert to fraction form
   7,290.84/15,978.94 = 15,978.94/x
3. Step 3: Cross multiply
   7,290.84x = 15,978.94 × 15,978.94
4. Step 4: Simplify right side
   7,290.84x = 255,326,443.63
5. Step 5: Solve for x
   x = 255,326,443.63/7,290.84
6. Step 6: Final answer
   x = 35,020.15