Finding the Third Proportional to 27,585.56 and 42,791.63

Step by Step Solution

1. Step 1: Write the proportion equation
   27,585.56 : 42,791.63 = 42,791.63 : x
2. Step 2: Convert to fraction form
   27,585.56/42,791.63 = 42,791.63/x
3. Step 3: Cross multiply
   27,585.56x = 42,791.63 × 42,791.63
4. Step 4: Simplify right side
   27,585.56x = 1,831,123,170.14
5. Step 5: Solve for x
   x = 1,831,123,170.14/27,585.56
6. Step 6: Final answer
   x = 66,379.77