Finding the Third Proportional to 90,622 and 187,615

Step by Step Solution

1. Step 1: Write the proportion equation
   90,622 : 187,615 = 187,615 : x
2. Step 2: Convert to fraction form
   90,622/187,615 = 187,615/x
3. Step 3: Cross multiply
   90,622x = 187,615 × 187,615
4. Step 4: Simplify right side
   90,622x = 35,199,388,225
5. Step 5: Solve for x
   x = 35,199,388,225/90,622
6. Step 6: Final answer
   x = 388,419.90