Finding the Third Proportional to 64,912 and 100,398

Step by Step Solution

1. Step 1: Write the proportion equation
   64,912 : 100,398 = 100,398 : x
2. Step 2: Convert to fraction form
   64,912/100,398 = 100,398/x
3. Step 3: Cross multiply
   64,912x = 100,398 × 100,398
4. Step 4: Simplify right side
   64,912x = 10,079,758,404
5. Step 5: Solve for x
   x = 10,079,758,404/64,912
6. Step 6: Final answer
   x = 155,283.44