Finding the Third Proportional to 4,398,128 and 9,160,284

Step by Step Solution

1. Step 1: Write the proportion equation
   4,398,128 : 9,160,284 = 9,160,284 : x
2. Step 2: Convert to fraction form
   4,398,128/9,160,284 = 9,160,284/x
3. Step 3: Cross multiply
   4,398,128x = 9,160,284 × 9,160,284
4. Step 4: Simplify right side
   4,398,128x = 83,910,802,960,656
5. Step 5: Solve for x
   x = 83,910,802,960,656/4,398,128
6. Step 6: Final answer
   x = 19,078,754.18