Finding the Third Proportional to 912,780 and 1,980,090

Step by Step Solution

1. Step 1: Write the proportion equation
   912,780 : 1,980,090 = 1,980,090 : x
2. Step 2: Convert to fraction form
   912,780/1,980,090 = 1,980,090/x
3. Step 3: Cross multiply
   912,780x = 1,980,090 × 1,980,090
4. Step 4: Simplify right side
   912,780x = 3,920,756,408,100
5. Step 5: Solve for x
   x = 3,920,756,408,100/912,780
6. Step 6: Final answer
   x = 4,295,401.31