Finding the Third Proportional to 87,751.69 and 139,475.81

Step by Step Solution

1. Step 1: Write the proportion equation
   87,751.69 : 139,475.81 = 139,475.81 : x
2. Step 2: Convert to fraction form
   87,751.69/139,475.81 = 139,475.81/x
3. Step 3: Cross multiply
   87,751.69x = 139,475.81 × 139,475.81
4. Step 4: Simplify right side
   87,751.69x = 19,453,502,272.54
5. Step 5: Solve for x
   x = 19,453,502,272.54/87,751.69
6. Step 6: Final answer
   x = 221,688.07