Finding the Third Proportional to 28,308.50 and 42,458

Step by Step Solution

1. Step 1: Write the proportion equation
   28,308.50 : 42,458 = 42,458 : x
2. Step 2: Convert to fraction form
   28,308.50/42,458 = 42,458/x
3. Step 3: Cross multiply
   28,308.50x = 42,458 × 42,458
4. Step 4: Simplify right side
   28,308.50x = 1,802,681,764
5. Step 5: Solve for x
   x = 1,802,681,764/28,308.50
6. Step 6: Final answer
   x = 63,679.88