Finding the Third Proportional to 2,129,908 and 4,584,587

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,908 : 4,584,587 = 4,584,587 : x
2. Step 2: Convert to fraction form
   2,129,908/4,584,587 = 4,584,587/x
3. Step 3: Cross multiply
   2,129,908x = 4,584,587 × 4,584,587
4. Step 4: Simplify right side
   2,129,908x = 21,018,437,960,569
5. Step 5: Solve for x
   x = 21,018,437,960,569/2,129,908
6. Step 6: Final answer
   x = 9,868,237.48