Finding the Third Proportional to 415.31 and 904.31

Step by Step Solution

1. Step 1: Write the proportion equation
   415.31 : 904.31 = 904.31 : x
2. Step 2: Convert to fraction form
   415.31/904.31 = 904.31/x
3. Step 3: Cross multiply
   415.31x = 904.31 × 904.31
4. Step 4: Simplify right side
   415.31x = 817,781.10
5. Step 5: Solve for x
   x = 817,781.10/415.31
6. Step 6: Final answer
   x = 1,969.07