Finding the Third Proportional to 31,012.88 and 42,327.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,012.88 : 42,327.56 = 42,327.56 : x
2. Step 2: Convert to fraction form
   31,012.88/42,327.56 = 42,327.56/x
3. Step 3: Cross multiply
   31,012.88x = 42,327.56 × 42,327.56
4. Step 4: Simplify right side
   31,012.88x = 1,791,622,547.19
5. Step 5: Solve for x
   x = 1,791,622,547.19/31,012.88
6. Step 6: Final answer
   x = 57,770.28