Finding the Third Proportional to 207,432 and 404,496

Step by Step Solution

1. Step 1: Write the proportion equation
   207,432 : 404,496 = 404,496 : x
2. Step 2: Convert to fraction form
   207,432/404,496 = 404,496/x
3. Step 3: Cross multiply
   207,432x = 404,496 × 404,496
4. Step 4: Simplify right side
   207,432x = 163,617,014,016
5. Step 5: Solve for x
   x = 163,617,014,016/207,432
6. Step 6: Final answer
   x = 788,774.22