Finding the Third Proportional to 3,557,580 and 7,779,468

Step by Step Solution

1. Step 1: Write the proportion equation
   3,557,580 : 7,779,468 = 7,779,468 : x
2. Step 2: Convert to fraction form
   3,557,580/7,779,468 = 7,779,468/x
3. Step 3: Cross multiply
   3,557,580x = 7,779,468 × 7,779,468
4. Step 4: Simplify right side
   3,557,580x = 60,520,122,363,024
5. Step 5: Solve for x
   x = 60,520,122,363,024/3,557,580
6. Step 6: Final answer
   x = 17,011,598.44