Finding the Third Proportional to 27,755.16 and 42,931.27

Step by Step Solution

1. Step 1: Write the proportion equation
   27,755.16 : 42,931.27 = 42,931.27 : x
2. Step 2: Convert to fraction form
   27,755.16/42,931.27 = 42,931.27/x
3. Step 3: Cross multiply
   27,755.16x = 42,931.27 × 42,931.27
4. Step 4: Simplify right side
   27,755.16x = 1,843,093,568.16
5. Step 5: Solve for x
   x = 1,843,093,568.16/27,755.16
6. Step 6: Final answer
   x = 66,405.45