Finding the Third Proportional to 915,780 and 1,989,204

Step by Step Solution

1. Step 1: Write the proportion equation
   915,780 : 1,989,204 = 1,989,204 : x
2. Step 2: Convert to fraction form
   915,780/1,989,204 = 1,989,204/x
3. Step 3: Cross multiply
   915,780x = 1,989,204 × 1,989,204
4. Step 4: Simplify right side
   915,780x = 3,956,932,553,616
5. Step 5: Solve for x
   x = 3,956,932,553,616/915,780
6. Step 6: Final answer
   x = 4,320,833.12