Finding the Third Proportional to 587.06 and 907.78

Step by Step Solution

1. Step 1: Write the proportion equation
   587.06 : 907.78 = 907.78 : x
2. Step 2: Convert to fraction form
   587.06/907.78 = 907.78/x
3. Step 3: Cross multiply
   587.06x = 907.78 × 907.78
4. Step 4: Simplify right side
   587.06x = 824,066.80
5. Step 5: Solve for x
   x = 824,066.80/587.06
6. Step 6: Final answer
   x = 1,403.71