Finding the Third Proportional to 5,705,145 and 12,685,878

Step by Step Solution

1. Step 1: Write the proportion equation
   5,705,145 : 12,685,878 = 12,685,878 : x
2. Step 2: Convert to fraction form
   5,705,145/12,685,878 = 12,685,878/x
3. Step 3: Cross multiply
   5,705,145x = 12,685,878 × 12,685,878
4. Step 4: Simplify right side
   5,705,145x = 160,931,500,630,884
5. Step 5: Solve for x
   x = 160,931,500,630,884/5,705,145
6. Step 6: Final answer
   x = 28,208,135.05