Finding the Third Proportional to 7,112.81 and 14,878.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.81 : 14,878.69 = 14,878.69 : x
2. Step 2: Convert to fraction form
   7,112.81/14,878.69 = 14,878.69/x
3. Step 3: Cross multiply
   7,112.81x = 14,878.69 × 14,878.69
4. Step 4: Simplify right side
   7,112.81x = 221,375,341.72
5. Step 5: Solve for x
   x = 221,375,341.72/7,112.81
6. Step 6: Final answer
   x = 31,123.46