Finding the Third Proportional to 90,300 and 135,123

Step by Step Solution

1. Step 1: Write the proportion equation
   90,300 : 135,123 = 135,123 : x
2. Step 2: Convert to fraction form
   90,300/135,123 = 135,123/x
3. Step 3: Cross multiply
   90,300x = 135,123 × 135,123
4. Step 4: Simplify right side
   90,300x = 18,258,225,129
5. Step 5: Solve for x
   x = 18,258,225,129/90,300
6. Step 6: Final answer
   x = 202,195.18