Finding the Third Proportional to 4,210,856 and 9,261,328

Step by Step Solution

1. Step 1: Write the proportion equation
   4,210,856 : 9,261,328 = 9,261,328 : x
2. Step 2: Convert to fraction form
   4,210,856/9,261,328 = 9,261,328/x
3. Step 3: Cross multiply
   4,210,856x = 9,261,328 × 9,261,328
4. Step 4: Simplify right side
   4,210,856x = 85,772,196,323,584
5. Step 5: Solve for x
   x = 85,772,196,323,584/4,210,856
6. Step 6: Final answer
   x = 20,369,301.71