Finding the Third Proportional to 30,897.75 and 67,458

Step by Step Solution

1. Step 1: Write the proportion equation
   30,897.75 : 67,458 = 67,458 : x
2. Step 2: Convert to fraction form
   30,897.75/67,458 = 67,458/x
3. Step 3: Cross multiply
   30,897.75x = 67,458 × 67,458
4. Step 4: Simplify right side
   30,897.75x = 4,550,581,764
5. Step 5: Solve for x
   x = 4,550,581,764/30,897.75
6. Step 6: Final answer
   x = 147,278.74