Finding the Third Proportional to 1,389,819 and 2,072,583

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,819 : 2,072,583 = 2,072,583 : x
2. Step 2: Convert to fraction form
   1,389,819/2,072,583 = 2,072,583/x
3. Step 3: Cross multiply
   1,389,819x = 2,072,583 × 2,072,583
4. Step 4: Simplify right side
   1,389,819x = 4,295,600,291,889
5. Step 5: Solve for x
   x = 4,295,600,291,889/1,389,819
6. Step 6: Final answer
   x = 3,090,762.39