Finding the Third Proportional to 1,980,390 and 4,331,724

Step by Step Solution

1. Step 1: Write the proportion equation
   1,980,390 : 4,331,724 = 4,331,724 : x
2. Step 2: Convert to fraction form
   1,980,390/4,331,724 = 4,331,724/x
3. Step 3: Cross multiply
   1,980,390x = 4,331,724 × 4,331,724
4. Step 4: Simplify right side
   1,980,390x = 18,763,832,812,176
5. Step 5: Solve for x
   x = 18,763,832,812,176/1,980,390
6. Step 6: Final answer
   x = 9,474,816.99