Finding the Third Proportional to 404,584 and 607,913

Step by Step Solution

1. Step 1: Write the proportion equation
   404,584 : 607,913 = 607,913 : x
2. Step 2: Convert to fraction form
   404,584/607,913 = 607,913/x
3. Step 3: Cross multiply
   404,584x = 607,913 × 607,913
4. Step 4: Simplify right side
   404,584x = 369,558,215,569
5. Step 5: Solve for x
   x = 369,558,215,569/404,584
6. Step 6: Final answer
   x = 913,427.66