Finding the Third Proportional to 4,658,279 and 9,876,430

Step by Step Solution

1. Step 1: Write the proportion equation
   4,658,279 : 9,876,430 = 9,876,430 : x
2. Step 2: Convert to fraction form
   4,658,279/9,876,430 = 9,876,430/x
3. Step 3: Cross multiply
   4,658,279x = 9,876,430 × 9,876,430
4. Step 4: Simplify right side
   4,658,279x = 97,543,869,544,900
5. Step 5: Solve for x
   x = 97,543,869,544,900/4,658,279
6. Step 6: Final answer
   x = 20,939,894.23