Finding the Third Proportional to 64,633.50 and 135,123

Step by Step Solution

1. Step 1: Write the proportion equation
   64,633.50 : 135,123 = 135,123 : x
2. Step 2: Convert to fraction form
   64,633.50/135,123 = 135,123/x
3. Step 3: Cross multiply
   64,633.50x = 135,123 × 135,123
4. Step 4: Simplify right side
   64,633.50x = 18,258,225,129
5. Step 5: Solve for x
   x = 18,258,225,129/64,633.50
6. Step 6: Final answer
   x = 282,488.57