Finding the Third Proportional to 42,281.25 and 66,900

Step by Step Solution

1. Step 1: Write the proportion equation
   42,281.25 : 66,900 = 66,900 : x
2. Step 2: Convert to fraction form
   42,281.25/66,900 = 66,900/x
3. Step 3: Cross multiply
   42,281.25x = 66,900 × 66,900
4. Step 4: Simplify right side
   42,281.25x = 4,475,610,000
5. Step 5: Solve for x
   x = 4,475,610,000/42,281.25
6. Step 6: Final answer
   x = 105,853.30