Finding the Third Proportional to 27,905.75 and 42,513.75

Step by Step Solution

1. Step 1: Write the proportion equation
   27,905.75 : 42,513.75 = 42,513.75 : x
2. Step 2: Convert to fraction form
   27,905.75/42,513.75 = 42,513.75/x
3. Step 3: Cross multiply
   27,905.75x = 42,513.75 × 42,513.75
4. Step 4: Simplify right side
   27,905.75x = 1,807,418,939.06
5. Step 5: Solve for x
   x = 1,807,418,939.06/27,905.75
6. Step 6: Final answer
   x = 64,768.69