Finding the Third Proportional to 25,487.75 and 42,123.25

Step by Step Solution

1. Step 1: Write the proportion equation
   25,487.75 : 42,123.25 = 42,123.25 : x
2. Step 2: Convert to fraction form
   25,487.75/42,123.25 = 42,123.25/x
3. Step 3: Cross multiply
   25,487.75x = 42,123.25 × 42,123.25
4. Step 4: Simplify right side
   25,487.75x = 1,774,368,190.56
5. Step 5: Solve for x
   x = 1,774,368,190.56/25,487.75
6. Step 6: Final answer
   x = 69,616.51