Finding the Third Proportional to 988,594 and 2,158,404

Step by Step Solution

1. Step 1: Write the proportion equation
   988,594 : 2,158,404 = 2,158,404 : x
2. Step 2: Convert to fraction form
   988,594/2,158,404 = 2,158,404/x
3. Step 3: Cross multiply
   988,594x = 2,158,404 × 2,158,404
4. Step 4: Simplify right side
   988,594x = 4,658,707,827,216
5. Step 5: Solve for x
   x = 4,658,707,827,216/988,594
6. Step 6: Final answer
   x = 4,712,458.12