Finding the Third Proportional to 775.69 and 900.56

Step by Step Solution

1. Step 1: Write the proportion equation
   775.69 : 900.56 = 900.56 : x
2. Step 2: Convert to fraction form
   775.69/900.56 = 900.56/x
3. Step 3: Cross multiply
   775.69x = 900.56 × 900.56
4. Step 4: Simplify right side
   775.69x = 811,012.82
5. Step 5: Solve for x
   x = 811,012.82/775.69
6. Step 6: Final answer
   x = 1,045.54