Finding the Third Proportional to 28,663.50 and 60,809

Step by Step Solution

1. Step 1: Write the proportion equation
   28,663.50 : 60,809 = 60,809 : x
2. Step 2: Convert to fraction form
   28,663.50/60,809 = 60,809/x
3. Step 3: Cross multiply
   28,663.50x = 60,809 × 60,809
4. Step 4: Simplify right side
   28,663.50x = 3,697,734,481
5. Step 5: Solve for x
   x = 3,697,734,481/28,663.50
6. Step 6: Final answer
   x = 129,004.99