Finding the Third Proportional to 25,690.50 and 42,673.50

Step by Step Solution

1. Step 1: Write the proportion equation
   25,690.50 : 42,673.50 = 42,673.50 : x
2. Step 2: Convert to fraction form
   25,690.50/42,673.50 = 42,673.50/x
3. Step 3: Cross multiply
   25,690.50x = 42,673.50 × 42,673.50
4. Step 4: Simplify right side
   25,690.50x = 1,821,027,602.25
5. Step 5: Solve for x
   x = 1,821,027,602.25/25,690.50
6. Step 6: Final answer
   x = 70,883.31