Finding the Third Proportional to 30,912 and 49,428

Step by Step Solution

1. Step 1: Write the proportion equation
   30,912 : 49,428 = 49,428 : x
2. Step 2: Convert to fraction form
   30,912/49,428 = 49,428/x
3. Step 3: Cross multiply
   30,912x = 49,428 × 49,428
4. Step 4: Simplify right side
   30,912x = 2,443,127,184
5. Step 5: Solve for x
   x = 2,443,127,184/30,912
6. Step 6: Final answer
   x = 79,034.91