Finding the Third Proportional to 985,108 and 2,138,354

Step by Step Solution

1. Step 1: Write the proportion equation
   985,108 : 2,138,354 = 2,138,354 : x
2. Step 2: Convert to fraction form
   985,108/2,138,354 = 2,138,354/x
3. Step 3: Cross multiply
   985,108x = 2,138,354 × 2,138,354
4. Step 4: Simplify right side
   985,108x = 4,572,557,829,316
5. Step 5: Solve for x
   x = 4,572,557,829,316/985,108
6. Step 6: Final answer
   x = 4,641,681.75