Finding the Third Proportional to 30,406.50 and 45,488

Step by Step Solution

1. Step 1: Write the proportion equation
   30,406.50 : 45,488 = 45,488 : x
2. Step 2: Convert to fraction form
   30,406.50/45,488 = 45,488/x
3. Step 3: Cross multiply
   30,406.50x = 45,488 × 45,488
4. Step 4: Simplify right side
   30,406.50x = 2,069,158,144
5. Step 5: Solve for x
   x = 2,069,158,144/30,406.50
6. Step 6: Final answer
   x = 68,049.86