Finding the Third Proportional to 1,988,992 and 4,354,160

Step by Step Solution

1. Step 1: Write the proportion equation
   1,988,992 : 4,354,160 = 4,354,160 : x
2. Step 2: Convert to fraction form
   1,988,992/4,354,160 = 4,354,160/x
3. Step 3: Cross multiply
   1,988,992x = 4,354,160 × 4,354,160
4. Step 4: Simplify right side
   1,988,992x = 18,958,709,305,600
5. Step 5: Solve for x
   x = 18,958,709,305,600/1,988,992
6. Step 6: Final answer
   x = 9,531,817.78