Finding the Third Proportional to 30,389.48 and 45,574.60

Step by Step Solution

1. Step 1: Write the proportion equation
   30,389.48 : 45,574.60 = 45,574.60 : x
2. Step 2: Convert to fraction form
   30,389.48/45,574.60 = 45,574.60/x
3. Step 3: Cross multiply
   30,389.48x = 45,574.60 × 45,574.60
4. Step 4: Simplify right side
   30,389.48x = 2,077,044,396.59
5. Step 5: Solve for x
   x = 2,077,044,396.59/30,389.48
6. Step 6: Final answer
   x = 68,347.49