Finding the Third Proportional to 401,428.50 and 591,054

Step by Step Solution

1. Step 1: Write the proportion equation
   401,428.50 : 591,054 = 591,054 : x
2. Step 2: Convert to fraction form
   401,428.50/591,054 = 591,054/x
3. Step 3: Cross multiply
   401,428.50x = 591,054 × 591,054
4. Step 4: Simplify right side
   401,428.50x = 349,344,830,916
5. Step 5: Solve for x
   x = 349,344,830,916/401,428.50
6. Step 6: Final answer
   x = 870,254.18