Finding the Third Proportional to 28,530 and 42,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,530 : 42,799.50 = 42,799.50 : x
2. Step 2: Convert to fraction form
   28,530/42,799.50 = 42,799.50/x
3. Step 3: Cross multiply
   28,530x = 42,799.50 × 42,799.50
4. Step 4: Simplify right side
   28,530x = 1,831,797,200.25
5. Step 5: Solve for x
   x = 1,831,797,200.25/28,530
6. Step 6: Final answer
   x = 64,206.00