Finding the Third Proportional to 25,503 and 42,145.50

Step by Step Solution

1. Step 1: Write the proportion equation
   25,503 : 42,145.50 = 42,145.50 : x
2. Step 2: Convert to fraction form
   25,503/42,145.50 = 42,145.50/x
3. Step 3: Cross multiply
   25,503x = 42,145.50 × 42,145.50
4. Step 4: Simplify right side
   25,503x = 1,776,243,170.25
5. Step 5: Solve for x
   x = 1,776,243,170.25/25,503
6. Step 6: Final answer
   x = 69,648.40