Finding the Third Proportional to 30,145.38 and 64,443

Step by Step Solution

1. Step 1: Write the proportion equation
   30,145.38 : 64,443 = 64,443 : x
2. Step 2: Convert to fraction form
   30,145.38/64,443 = 64,443/x
3. Step 3: Cross multiply
   30,145.38x = 64,443 × 64,443
4. Step 4: Simplify right side
   30,145.38x = 4,152,900,249
5. Step 5: Solve for x
   x = 4,152,900,249/30,145.38
6. Step 6: Final answer
   x = 137,762.43