Finding the Third Proportional to 16,389 and 34,715.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,389 : 34,715.25 = 34,715.25 : x
2. Step 2: Convert to fraction form
   16,389/34,715.25 = 34,715.25/x
3. Step 3: Cross multiply
   16,389x = 34,715.25 × 34,715.25
4. Step 4: Simplify right side
   16,389x = 1,205,148,582.56
5. Step 5: Solve for x
   x = 1,205,148,582.56/16,389
6. Step 6: Final answer
   x = 73,533.99