Finding the Third Proportional to 25,508.25 and 42,156

Step by Step Solution

1. Step 1: Write the proportion equation
   25,508.25 : 42,156 = 42,156 : x
2. Step 2: Convert to fraction form
   25,508.25/42,156 = 42,156/x
3. Step 3: Cross multiply
   25,508.25x = 42,156 × 42,156
4. Step 4: Simplify right side
   25,508.25x = 1,777,128,336
5. Step 5: Solve for x
   x = 1,777,128,336/25,508.25
6. Step 6: Final answer
   x = 69,668.77