Finding the Third Proportional to 1,430,215 and 2,120,583

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430,215 : 2,120,583 = 2,120,583 : x
2. Step 2: Convert to fraction form
   1,430,215/2,120,583 = 2,120,583/x
3. Step 3: Cross multiply
   1,430,215x = 2,120,583 × 2,120,583
4. Step 4: Simplify right side
   1,430,215x = 4,496,872,259,889
5. Step 5: Solve for x
   x = 4,496,872,259,889/1,430,215
6. Step 6: Final answer
   x = 3,144,193.19