Finding the Third Proportional to 58,729.50 and 129,123

Step by Step Solution

1. Step 1: Write the proportion equation
   58,729.50 : 129,123 = 129,123 : x
2. Step 2: Convert to fraction form
   58,729.50/129,123 = 129,123/x
3. Step 3: Cross multiply
   58,729.50x = 129,123 × 129,123
4. Step 4: Simplify right side
   58,729.50x = 16,672,749,129
5. Step 5: Solve for x
   x = 16,672,749,129/58,729.50
6. Step 6: Final answer
   x = 283,890.53