Finding the Third Proportional to 2,159,892 and 4,640,310

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159,892 : 4,640,310 = 4,640,310 : x
2. Step 2: Convert to fraction form
   2,159,892/4,640,310 = 4,640,310/x
3. Step 3: Cross multiply
   2,159,892x = 4,640,310 × 4,640,310
4. Step 4: Simplify right side
   2,159,892x = 21,532,476,896,100
5. Step 5: Solve for x
   x = 21,532,476,896,100/2,159,892
6. Step 6: Final answer
   x = 9,969,237.77