Finding the Third Proportional to 189,365 and 404,973

Step by Step Solution

1. Step 1: Write the proportion equation
   189,365 : 404,973 = 404,973 : x
2. Step 2: Convert to fraction form
   189,365/404,973 = 404,973/x
3. Step 3: Cross multiply
   189,365x = 404,973 × 404,973
4. Step 4: Simplify right side
   189,365x = 164,003,130,729
5. Step 5: Solve for x
   x = 164,003,130,729/189,365
6. Step 6: Final answer
   x = 866,068.87