Finding the Third Proportional to 985,554 and 2,118,339

Step by Step Solution

1. Step 1: Write the proportion equation
   985,554 : 2,118,339 = 2,118,339 : x
2. Step 2: Convert to fraction form
   985,554/2,118,339 = 2,118,339/x
3. Step 3: Cross multiply
   985,554x = 2,118,339 × 2,118,339
4. Step 4: Simplify right side
   985,554x = 4,487,360,118,921
5. Step 5: Solve for x
   x = 4,487,360,118,921/985,554
6. Step 6: Final answer
   x = 4,553,134.70