Finding the Third Proportional to 405,116.25 and 883,128

Step by Step Solution

1. Step 1: Write the proportion equation
   405,116.25 : 883,128 = 883,128 : x
2. Step 2: Convert to fraction form
   405,116.25/883,128 = 883,128/x
3. Step 3: Cross multiply
   405,116.25x = 883,128 × 883,128
4. Step 4: Simplify right side
   405,116.25x = 779,915,064,384
5. Step 5: Solve for x
   x = 779,915,064,384/405,116.25
6. Step 6: Final answer
   x = 1,925,163.62