Finding the Third Proportional to 5,868,588 and 12,856,920

Step by Step Solution

1. Step 1: Write the proportion equation
   5,868,588 : 12,856,920 = 12,856,920 : x
2. Step 2: Convert to fraction form
   5,868,588/12,856,920 = 12,856,920/x
3. Step 3: Cross multiply
   5,868,588x = 12,856,920 × 12,856,920
4. Step 4: Simplify right side
   5,868,588x = 165,300,391,886,400
5. Step 5: Solve for x
   x = 165,300,391,886,400/5,868,588
6. Step 6: Final answer
   x = 28,166,978.48