Finding the Third Proportional to 401,550 and 591,222

Step by Step Solution

1. Step 1: Write the proportion equation
   401,550 : 591,222 = 591,222 : x
2. Step 2: Convert to fraction form
   401,550/591,222 = 591,222/x
3. Step 3: Cross multiply
   401,550x = 591,222 × 591,222
4. Step 4: Simplify right side
   401,550x = 349,543,453,284
5. Step 5: Solve for x
   x = 349,543,453,284/401,550
6. Step 6: Final answer
   x = 870,485.50