Finding the Third Proportional to 890,391 and 1,979,934

Step by Step Solution

1. Step 1: Write the proportion equation
   890,391 : 1,979,934 = 1,979,934 : x
2. Step 2: Convert to fraction form
   890,391/1,979,934 = 1,979,934/x
3. Step 3: Cross multiply
   890,391x = 1,979,934 × 1,979,934
4. Step 4: Simplify right side
   890,391x = 3,920,138,644,356
5. Step 5: Solve for x
   x = 3,920,138,644,356/890,391
6. Step 6: Final answer
   x = 4,402,715.94