Finding the Third Proportional to 25,497.84 and 42,138.56

Step by Step Solution

1. Step 1: Write the proportion equation
   25,497.84 : 42,138.56 = 42,138.56 : x
2. Step 2: Convert to fraction form
   25,497.84/42,138.56 = 42,138.56/x
3. Step 3: Cross multiply
   25,497.84x = 42,138.56 × 42,138.56
4. Step 4: Simplify right side
   25,497.84x = 1,775,658,449.57
5. Step 5: Solve for x
   x = 1,775,658,449.57/25,497.84
6. Step 6: Final answer
   x = 69,639.55