Finding the Third Proportional to 30,112 and 45,389

Step by Step Solution

1. Step 1: Write the proportion equation
   30,112 : 45,389 = 45,389 : x
2. Step 2: Convert to fraction form
   30,112/45,389 = 45,389/x
3. Step 3: Cross multiply
   30,112x = 45,389 × 45,389
4. Step 4: Simplify right side
   30,112x = 2,060,161,321
5. Step 5: Solve for x
   x = 2,060,161,321/30,112
6. Step 6: Final answer
   x = 68,416.62