Finding the Third Proportional to 25,543.50 and 42,212.25

Step by Step Solution

1. Step 1: Write the proportion equation
   25,543.50 : 42,212.25 = 42,212.25 : x
2. Step 2: Convert to fraction form
   25,543.50/42,212.25 = 42,212.25/x
3. Step 3: Cross multiply
   25,543.50x = 42,212.25 × 42,212.25
4. Step 4: Simplify right side
   25,543.50x = 1,781,874,050.06
5. Step 5: Solve for x
   x = 1,781,874,050.06/25,543.50
6. Step 6: Final answer
   x = 69,758.41