Finding the Third Proportional to 5,864,840 and 8,587,308

Step by Step Solution

1. Step 1: Write the proportion equation
   5,864,840 : 8,587,308 = 8,587,308 : x
2. Step 2: Convert to fraction form
   5,864,840/8,587,308 = 8,587,308/x
3. Step 3: Cross multiply
   5,864,840x = 8,587,308 × 8,587,308
4. Step 4: Simplify right side
   5,864,840x = 73,741,858,686,864
5. Step 5: Solve for x
   x = 73,741,858,686,864/5,864,840
6. Step 6: Final answer
   x = 12,573,549.95