Finding the Third Proportional to 87,308.44 and 188,389.69

Step by Step Solution

1. Step 1: Write the proportion equation
   87,308.44 : 188,389.69 = 188,389.69 : x
2. Step 2: Convert to fraction form
   87,308.44/188,389.69 = 188,389.69/x
3. Step 3: Cross multiply
   87,308.44x = 188,389.69 × 188,389.69
4. Step 4: Simplify right side
   87,308.44x = 35,490,674,356.35
5. Step 5: Solve for x
   x = 35,490,674,356.35/87,308.44
6. Step 6: Final answer
   x = 406,497.65