Finding the Third Proportional to 87,188 and 123,405.25

Step by Step Solution

1. Step 1: Write the proportion equation
   87,188 : 123,405.25 = 123,405.25 : x
2. Step 2: Convert to fraction form
   87,188/123,405.25 = 123,405.25/x
3. Step 3: Cross multiply
   87,188x = 123,405.25 × 123,405.25
4. Step 4: Simplify right side
   87,188x = 15,228,855,727.56
5. Step 5: Solve for x
   x = 15,228,855,727.56/87,188
6. Step 6: Final answer
   x = 174,666.88