Finding the Third Proportional to 15,123 and 34,711.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,123 : 34,711.50 = 34,711.50 : x
2. Step 2: Convert to fraction form
   15,123/34,711.50 = 34,711.50/x
3. Step 3: Cross multiply
   15,123x = 34,711.50 × 34,711.50
4. Step 4: Simplify right side
   15,123x = 1,204,888,232.25
5. Step 5: Solve for x
   x = 1,204,888,232.25/15,123
6. Step 6: Final answer
   x = 79,672.57