Finding the Third Proportional to 87,768.56 and 139,672.69

Step by Step Solution

1. Step 1: Write the proportion equation
   87,768.56 : 139,672.69 = 139,672.69 : x
2. Step 2: Convert to fraction form
   87,768.56/139,672.69 = 139,672.69/x
3. Step 3: Cross multiply
   87,768.56x = 139,672.69 × 139,672.69
4. Step 4: Simplify right side
   87,768.56x = 19,508,459,633.47
5. Step 5: Solve for x
   x = 19,508,459,633.47/87,768.56
6. Step 6: Final answer
   x = 222,271.61